Some standard content:
[CS 71.080.60
National Standard of the People's Republic of China
GB 338—2004
Replaces GR338—1992
Methanol to industrial use
Issued on November 29, 2004
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
Implementation on May 1, 2005
Clause 6.1 of this standard is regulatory. This standard is recommended for revision and adopts the Chinese version of the relevant test and testing association standard A5M1153:1557. CB338—2004
This standard was re-drafted based on 4SM[?2:1SS?]. The appendix lists the abbreviations of the ASMD1152:1997 series. The differences between this standard and 152:1397 are as follows: the product is divided into two grades, and the product is a combination of two grades (3.2 of this standard): This is determined based on the classification rules of relevant industrial products in my country:
One additional item is included (3.2 of this standard). This is to achieve the following product quality standards: superior product, color, cavity, double crack, etc.: 4M11152, (3.2 of the standard); the number of socks in the hospital is added to the test piece method using ASTMD--52 Except for the standard method specified in 1JU7, all other test methods adopt the principle of film method and basic operation and the method specified in A51M131152:7. The national standard for product testing of non-standard products in this standard shall be changed to the national standard for product testing of non-standard products in this standard. The main changes in this standard are as follows: 1. Adding acid-stimulated stand-alone test and ethanol winter test items (3.2.4.10 and 4.11): High-quality light-based compound content test method (4.4, 4.8 of the 192 edition) shall be changed to the national standard for product testing method (4.4, 4.8 of the 192 edition). 8;
Changed the inspection rules, packaging, transportation and storage (1992 edition of the 5th abandoned, the 6th version of the 5th list, the 6th
This standard is for the recording of materials:
This standard is submitted to the National Petroleum Chemical Industry Association: + Standardization Day National North University Standardization Technical Requirements Conference Organic Branch (513TS/T63/S2> centralized. Standard household Petrochemical Group Guowei Store Lun Goods Support China: Shanghai Chemical Co., Ltd. Guochuan Chichuan Northwest Gas Mine Zhongyan Plant Taiqing Xiaojia Teaching "Study China.
This standard 1 main single person: Guo This standard was first issued in 1961, revised in the first quarter of 1970, revised for the second time in December 1935, and revised for the third time in March 2003:
1 Specification
Industrial methanol
GB338—2004
This standard specifies the requirements, test methods, inspection methods and speed for industrial methanol, including storage life and decomposition, etc. This standard is applicable to diethanol synthesized from coal, coke, natural gas, light oil and heavy oil. This product is to be used in chemical industry! Industry, pharmaceutical industry, pharmaceutical industry, Sichuan as fuel., CHOH
relative molecular mass: 32042 according to 2001 international quality! 2 Normative reference documents
Many of the following documents have become the terms of this standard through the reference of the standard. All the documents of the period of light red II, the subsequent amendments (excluding the contents of the survey) or the revisions are not applicable to this part. However, before the reference documents are difficult to reach an agreement on whether to use the latest versions of these documents, all the reference documents that are not in force are as follows: Used for card standard: GB! Dangerous goods packaging mark || TT || GH:T Chemical agent standard preparation || TT || GH:T 63 Chemical formula test method for the preparation of products and preparation of products GH:T1250 Limiting number expression method and determination method GB/T3143 Liquid chemical product title color correction method (TIasen unit - platinum-pin color number) B:T:472-195 Chemical 1. Product case change, related case two general rules B/T283 Chemical product market water content determination: Karl Fischer method (general market method compensation /, 153 760,1972
H3?.1Test methods for organic chemical products-Part 1: Determination of moisture content of organic products-GB/T6324.2Test methods for organic chemical products-Part 2: Determination of moisture content of organic substances after thermal decomposition-GB/ 5324. 2-004,ISO 7a, lu81, Vol. org.: fresh industrial Trichlorfon nf crsrcaiduc after evaporation un t. wuter lg-il—felraal method,MDG5/T21.—1SDetermination of manganese dioxide in organic products-T6324.6Determination of trace amounts of manganese dioxide in organic products-Photometric methodGB324.61986.u1S13883:141
GB/T 78t
Chemical product sampling general points
Sampling general rules for chemical products
Extension ageing room water standard viscosity test method/T5682-102, 1C1503696: 1987GB/T6683
1 Industry belt selection organic liquid description socks release test LG/T733:-2141, 1S1626: 1980VelaticGB/T534
Organie liajuirisTr+rmi-lion n[ hoiling renge od crgaric solvests uxed us raw thale:ials,MC]GB/T722--[965 Chemical chromatography technique 3 Requirements
3.1 Industrial methanol shall be odorless, free of melamine and without any other substances: 3.21 Industrial methanol shall meet the technical requirements shown in the table: GB338-20Q4
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High test cost/Ti
Water can be tested for light properties
on the market!
Chengcheng score (NH: ->:
Chemical score (
Thermal double method internal wind score: %
t Yang selected polyester single generation (-self number)
Technical/
Test method
Technical requirements
0.79:.-0.733
Please pass the test 1+3:
Pass the test (1
0. 70: - (0. 703
Unless otherwise specified, only positive reagents and water that meet the requirements of G, T and other related analytical secretions are used in the analysis. The relative ratio of the precipitate used is as follows: H1503: 4.1 Determination of color according to the thermal evaluation of K11. 4.2 Determination of density according to T1172-1984. 2.3. The relative volume method is used in the test of the total energy cat. In the range of -35, the sample is fully self-calibrated (3m·T, the relative sound book is the secondary method. The value of the two consecutive results is not determined by the clock, and the parallel results are not considered to be large. 0m4. 3 Determination of boiling range
According to GR/T7531, the range of boiling range is 53-70°C.
4.4 Permanganate scanning test
According to 1-24.3-33, the sample temperature is controlled at: 1. The validity period of the standard ratio is 1.5. 4.5 Water miscibility test
According to K/6524.1, the ratio of sample to water temperature is selected to be: 1-light grade: 1.9-grade 4.6 Determination of water content
tt||Take two parallel determinations and calculate the half mean as the determination result. The results of the second determination are not included in the determination. 3.4.7 Determination of acidity or acidity
4.1 Method summary
The sample is diluted with water without carbon dioxide, and the blue is used as the reagent. If the sample is acidic, the sodium hydroxide solution should be titrated with the acid solution. The formula is: Niu Shizhou Tax Standard Solution 4.7.2 Reagents
4.7.2.1 Standard sodium sulfate solution: iNn.01mal:T.
4.7.2.2 Acid standard solution: c1/2H.SC,>n.01nal/L4,7.2.3 Read the blue sample after the single-cell: 1L: 4.7.2.4 and the three-calculation water,
4.7.3
titration: 1ml.-division is 0.C5ml.,
4.7.4 Analysis steps
GB3382004
4.7.4.1 Test column experience no carbon monoxide water dilute sample, add 4--= energy wave! Fragrant letter indicator chain gold, yellow for waist anti-avoidance, side determination, blue for cattle this response, determination of nuclear concentration, 4.7.4.2 Take =1. No carbon dioxide system. Add 2 ml. Add ~5 drops of blue indicator solution to the three bottles, when determining free acid, use the standard non-titration solution to titrate the blue solution, add m! The sample is titrated with sodium ion standard solution and the color is not exceeded for 3 minutes, which is the end point. When the carbon is determined, the concentration is titrated with sulfuric acid standard solution: the color changes from white to white, and the color is not exceeded for 30 minutes, which is the end point. 1.7. 5 The result is expressed as the mass fraction of oxygen (HCO) in the solution. The value is expressed as the mass fraction of nitrogen (NH). The count value is expressed as the coefficient: Calculate according to formula 1) and formula 121: - (V/1 0.m× 100
- V M100
≤ the value of the standard titration (4.7.2.1) in milliliters (L); the standard effective value of the liquid concentration of the biochemical standard solution should be moles per liter (1m=l/L).
The maximum effective value is expressed as grams per cubic centimeter:
The value of the volume of the alcohol in the determination of temperature and time, in grams per cubic centimeter (m); The value of the volume of the titration (1.7.2.2), in milliliters (L); Please note that the titration rate is the accurate effective value, in milliliters per hour (rr/; The value of the mass fraction within the range is grams per liter (g1ol) M: -17.03): Determine the effective value, take the average value of two parallel measurements 4. Determination of carbonyl compounds content
According to GB:14F, the standard temperature of 4m:H2O2 is 100% and the determination result is formaldehyde (TIO). The determination result is measured at the temperature not lower than 100%. The relative difference between the two determination results is not more than 10%. 4.9 Determination of thermal residual content
According to GB:64.2, the standard temperature of 4m:H2O2 is 100% and the determination result is the relative difference between the two determination results is not more than 100%. 4.10 Magnetic formaldehyde washing test
4. 10.1 Method Summary
Under certain conditions, the colorimetric method is used to determine the color of the mixture with the standard aluminum cobalt standard. 4.0.2 Test
4.0.2.1 Solution 1
4, 0.2.2, 5, molten metal: CB/T31-3 preparation. 4.10.3 Receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (piece from four code super>mL4.10.4 Analytical step
4.10.4.1 The broken pieces of currency in the test are only the device that does not contain the color of the system, use or consult potassium acid-research type alcohol discussion device, then select the water, use the disinfection method to dry or use the acid to study the color of the back secretion, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material device-lock stirring, add 2>mL of acid, the time of adding acid is i+im Place at room temperature for 15min, and then add a colorimetric tube. Take another colorimetric tube, add 5mE platinum standard colorimetric solution, and compare the color at a distance of 15mm above the film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not large.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Using gas chromatography, the impurities such as alcohol in the solution are separated under the selected working conditions and detected by a high-energy ionization detector. Determine the quantitative calibration, calculate the mass fraction of ethanol according to the internal standard method, 4.11.2 Test samples and materials
4.11.2.1 No 2,2 alcohol
4.11.2.2 Open rain ethanol: pure blue color, internal cup material 4.11.2.3 Determination of the degree of self-determination
4.11.2.4 Wash 62314 sample: .13mr~2,2mma medium, the amount of ethanol is not more than 3.001%, if the 2,2 alcohol content is high! 4.11.2.5
Hydrogen, volume fraction not less than 99.5% by volume, collected and separated by sieve drying, purified by sieving; 4.11.2.7
4.11.2.8 Clean gas is collected and molecular weight is purified by drying: 4.11.3 Apparatus
4.11.3.1 Chromatograph: any type of gas chromatograph with good nuclear stability in accordance with the relevant provisions of GK722-188:
4.11.3.2 Color enhancement: weigh 301.5% alcohol, put it in a 100m3 beaker, add 3). 1. Heat the water in the tank, adjust the alcohol type, add 0.1% of the alcohol, and put it in the tank for use. 1% of the alcohol supplied by the user shall be screened and used. The color and light chemical packaging shall be carried out as specified in 7.1.3 and 7.1.1 of CB/T9722-1988. 4.11.3.3 Note: Number of chromatograms or recordings: 4.11.3.4 Microinjector 100
4.11.3.5 Typical working conditions: The columns and performance conditions of this standard are referred to in Table 1. Other chromatograms and working conditions of the same type can also be used: Typical diagram See Figure: Typical diagram, Table 2 Chromatogram # and typical working records
But the length of the column is slightly longer than the column
Slightly penetrated
Vaporization chamber performance
Selection tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is reduced by 1 year old 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)1. Test the carbon monoxide-free water sample, add 4--= energy wave! The chain gold indicator is yellow for the reaction, the side is good, the blue is the reaction, the determination of the concentration, 4.7.4.2 Take 1. No carbon dioxide. Add 2 ml. Add ~5 drops of blue indicator solution to the bottle. When determining free acid, use the standard non-titration solution to titrate the blue solution, add 1 ml! The sample is titrated with the standard sodium carbonate solution. The sound is not generated. If the color does not exceed 30%, it is the end point. When determining free carbon, use standard sulfuric acid to titrate: the color changes from the primary color to the product color, and the end point is 30%. 1.7.5 The result is expressed as the mass fraction of oxygen in the HCO2 gas at a temperature of 100 °C. The value is expressed as the mass fraction of nitrogen in the NH2 gas at a temperature of 100 °C. The count value is expressed as a coefficient: The calculation is based on formula 1) and formula 121: - (V/1 0.m× 100
- V M100
≤ the value of the standard titration (4.7.2.1) in milliliters (L); the standard effective value of the liquid concentration of the biochemical standard solution should be moles per liter (1m=l/L).
The maximum effective value is expressed as grams per cubic centimeter:
The value of the volume of the alcohol in the determination of temperature and time, in grams per cubic centimeter (m); The value of the volume of the titration (1.7.2.2), in milliliters (L); Please note that the titration rate is the accurate effective value, in milliliters per hour (rr/; The value of the mass fraction within the range is grams per liter (g1ol) M: -17.03): Determine the effective value, take the average value of two parallel measurements 4. Determination of carbonyl compounds content
According to GB:14F, the standard temperature of 4m:H2O2 is 100% and the determination result is formaldehyde (TIO). The determination result is measured at the temperature not lower than 100%. The relative difference between the two determination results is not more than 10%. 4.9 Determination of thermal residual content
According to GB:64.2, the standard temperature of 4m:H2O2 is 100% and the determination result is the relative difference between the two determination results is not more than 100%. 4.10 Magnetic formaldehyde washing test
4. 10.1 Method Summary
Under certain conditions, the colorimetric method is used to determine the color of the mixture with the standard aluminum cobalt standard. 4.0.2 Test
4.0.2.1 Solution 1
4, 0.2.2, 5, molten metal: CB/T31-3 preparation. 4.10.3 Receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (piece from four code super>mL4.10.4 Analytical step
4.10.4.1 The broken pieces of currency in the test are only the device that does not contain the color of the system, use or consult potassium acid-research type alcohol discussion device, then select the water, use the disinfection method to dry or use the acid to study the color of the back secretion, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material device-lock stirring, add 2>mL of acid, the time of adding acid is i+im Place at room temperature for 15min, and then add a colorimetric tube. Take another colorimetric tube, add 5mE platinum standard colorimetric solution, and compare the color at a distance of 15mm above the film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not large.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Using gas chromatography, the impurities such as alcohol in the solution are separated under the selected working conditions and detected by a high-energy ionization detector. Determine the quantitative calibration, calculate the mass fraction of ethanol according to the internal standard method, 4.11.2 Test samples and materials
4.11.2.1 No 2,2 alcohol
4.11.2.2 Open rain ethanol: pure blue color, internal cup material 4.11.2.3 Determination of the degree of self-determination
4.11.2.4 Wash 62314 sample: .13mr~2,2mma medium, the amount of ethanol is not more than 3.001%, if the 2,2 alcohol content is high! 4.11.2.5
Hydrogen, volume fraction not less than 99.5% by volume, collected and separated by sieve drying, purified by sieving; 4.11.2.7
4.11.2.8 Clean gas is collected and molecular weight is purified by drying: 4.11.3 Apparatus
4.11.3.1 Chromatograph: any type of gas chromatograph with good nuclear stability in accordance with the relevant provisions of GK722-188:
4.11.3.2 Color enhancement: weigh 301.5% alcohol, put it in a 100m3 beaker, add 3). 1. Heat the water in the tank, adjust the alcohol type, add 0.1% of the alcohol, and put it in the tank for use. 1% of the alcohol supplied by the user shall be screened and used. The color and light chemical packaging shall be carried out as specified in 7.1.3 and 7.1.1 of CB/T9722-1988. 4.11.3.3 Note: Number of chromatograms or recordings: 4.11.3.4 Microinjector 100
4.11.3.5 Typical working conditions: The columns and performance conditions of this standard are referred to in Table 1. Other chromatograms and working conditions of the same type can also be used: Typical diagram See Figure: Typical diagram, Table 2 Chromatogram # and typical working records
But the length of the column is slightly longer than the column
Slightly penetrated
Vaporization chamber performance
Selection tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is reduced by 1 year old 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)1. Test the carbon monoxide-free water sample, add 4--= energy wave! The chain gold indicator is yellow for the reaction, the side is good, the blue is the reaction, the determination of the concentration, 4.7.4.2 Take 1. No carbon dioxide. Add 2 ml. Add ~5 drops of blue indicator solution to the bottle. When determining free acid, use the standard non-titration solution to titrate the blue solution, add 1 ml! The sample is titrated with the standard sodium carbonate solution. The sound is not generated. If the color does not exceed 30%, it is the end point. When determining free carbon, use standard sulfuric acid to titrate: the color changes from the primary color to the product color, and the end point is 30%. 1.7.5 The result is expressed as the mass fraction of oxygen in the HCO2 gas at a temperature of 100 °C. The value is expressed as the mass fraction of nitrogen in the NH2 gas at a temperature of 100 °C. The count value is expressed as a coefficient: The calculation is based on formula 1) and formula 121: - (V/1 0.m× 100
- V M100
≤ the value of the standard titration (4.7.2.1) in milliliters (L); the standard effective value of the liquid concentration of the biochemical standard solution should be moles per liter (1m=l/L).
The maximum effective value is expressed as grams per cubic centimeter:
The value of the volume of the alcohol in the determination of temperature and time, in grams per cubic centimeter (m); The value of the volume of the titration (1.7.2.2), in milliliters (L); Please note that the titration rate is the accurate effective value, in milliliters per hour (rr/; The value of the mass fraction within the range is grams per liter (g1ol) M: -17.03): Determine the effective value, take the average value of two parallel measurements 4. Determination of carbonyl compounds content
According to GB:14F, the standard temperature of 4m:H2O2 is 100% and the determination result is formaldehyde (TIO). The determination result is measured at the temperature not lower than 100%. The relative difference between the two determination results is not more than 10%. 4.9 Determination of thermal residual content
According to GB:64.2, the standard temperature of 4m:H2O2 is 100% and the determination result is the relative difference between the two determination results is not more than 100%. 4.10 Magnetic formaldehyde washing test
4. 10.1 Method Summary
Under certain conditions, the colorimetric method is used to determine the color of the mixture with the standard aluminum cobalt standard. 4.0.2 Test
4.0.2.1 Solution 1
4, 0.2.2, 5, molten metal: CB/T31-3 preparation. 4.10.3 Receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (piece from four code super>mL4.10.4 Analytical step
4.10.4.1 The broken pieces of currency in the test are only the device that does not contain the color of the system, use or consult potassium acid-research type alcohol discussion device, then select the water, use the disinfection method to dry or use the acid to study the color of the back secretion, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material device-lock stirring, add 2>mL of acid, the time of adding acid is i+im Place at room temperature for 15min, and then add a colorimetric tube. Take another colorimetric tube, add 5mE platinum standard colorimetric solution, and compare the color at a distance of 15mm above the film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not large.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Using gas chromatography, the impurities such as alcohol in the solution are separated under the selected working conditions and detected by a high-energy ionization detector. Determine the quantitative calibration, calculate the mass fraction of ethanol according to the internal standard method, 4.11.2 Test samples and materials
4.11.2.1 No 2,2 alcohol
4.11.2.2 Open rain ethanol: pure blue color, internal cup material 4.11.2.3 Determination of the degree of self-determination
4.11.2.4 Wash 62314 sample: .13mr~2,2mma medium, the amount of ethanol is not more than 3.001%, if the 2,2 alcohol content is high! 4.11.2.5
Hydrogen, volume fraction not less than 99.5% by volume, collected and separated by sieve drying, purified by sieving; 4.11.2.7
4.11.2.8 Clean gas is collected and molecular weight is purified by drying: 4.11.3 Apparatus
4.11.3.1 Chromatograph: any type of gas chromatograph with good nuclear stability in accordance with the relevant provisions of GK722-188:
4.11.3.2 Color enhancement: weigh 301.5% alcohol, put it in a 100m3 beaker, add 3). 1. Heat the water in the tank, adjust the alcohol type, add 0.1% of the alcohol, and put it in the tank for use. 1% of the alcohol supplied by the user shall be screened and used. The color and light chemical packaging shall be carried out as specified in 7.1.3 and 7.1.1 of CB/T9722-1988. 4.11.3.3 Note: Number of chromatograms or recordings: 4.11.3.4 Microinjector 100
4.11.3.5 Typical working conditions: The columns and performance conditions of this standard are referred to in Table 1. Other chromatograms and working conditions of the same type can also be used: Typical diagram See Figure: Typical diagram, Table 2 Chromatogram # and typical working records
But the length of the column is slightly longer than the column
Slightly penetrated
Vaporization chamber performance
Selection tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is reduced by 1 year old 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)m× 100
- V M100
is the standard for the energy saving of the game (4.7.2.1)! The value is in milliliters (L); the standard effective value of the liquid concentration of the biochemical solution should be in moles per liter (1m=l/L).
is represented by grams per cubic centimeter:
is the value of the volume of the alcohol measured at temperature, in grams per cubic centimeter (m); the value of the titration (1.7.2.2) is in milliliters (L); the effective value of the titration rate is in grams per liter (rr/; the value of the mass fraction in the range is in grams per liter (g1ol) M: -17.03): to determine the effective value, take the average value of two parallel measurements as the final measurement, and wait for the two equal measurements before the final measurement. The relative difference is not much. 4. Determination of carbonyl compound content
According to GB:14F, the standard temperature of 1 month free alcohol is 4m: the standard temperature of H compound is /m, the temperature shall not be lower than R. The determination result is measured by formaldehyde (TIO). Take two parallel measurements and the average of the results is the test result. The relative deviation is not more than 4.9 Determination of thermal residual content
According to GB/T64.2, the standard temperature of 1 month free alcohol is 4m: the standard temperature of H compound is /m, the temperature shall not be lower than R. The determination result is measured by formaldehyde (TIO). Take two parallel measurements and the average of the results is the test result. The relative deviation is not more than 4.10 Magnetic formaldehyde washing test
4. 10.1 Method Summary
Under certain conditions, the colorimetric method is used to determine the color of the mixture with the standard aluminum cobalt standard. 4.0.2 Test
4.0.2.1 Solution 1
4, 0.2.2, 5, molten metal: CB/T31-3 preparation. 4.10.3 Receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (part from the four code more than home>mL4.10.4 wing analysis
4.10.4.1 The broken pieces of the currency in the test only do not contain the system with the crystal-colored substances, use or consult potassium acid-research type alcohol discussion device, then select the month water, use the disinfection method to dry or use the acid-resistant color range, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material-locked stirring, add 2>mL of acid, add acid at a speed of i+im, place at room temperature for 15ni-n, 5min, and put in a tube. Take another First, add 5mE platinum standard colorimetric solution to the colorimetric solution, and compare the color at a distance of 15 mm above the color film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not greater than that of the two parallel determinations.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Use gas chromatography to separate the alcohol and other impurities in the solution under the selected working conditions, and detect them with a high-purity ionization detector. Determine the quantitative calibration, and calculate the mass fraction of ethyl alcohol according to the internal standard method. 4.11.2 Test and materials
4.11.2. 1 No 2,2 alcohol || tt || 4.11.2.2 Rain alcohol: pure green color, content 4.11.2.3 degree self-consultation determination section || tt || 4.11.2.4 Wash 62314 body: .13mr ~ 2,2mma medium, the amount of ethanol is not more than 3.001%, if the 2,2 alcohol content is human! 4.11.2.5
Hydrogen, volume fraction not less than 99.5% by volume, collected and separated by sieve drying, purified by sieving; 4.11.2.7
4.11.2.8 Clean gas is collected and molecular weight is purified by drying: 4.11.3 Apparatus
4.11.3.1 Chromatograph: any type of gas chromatograph with good nuclear stability in accordance with the relevant provisions of GK722-188:
4.11.3.2 Color enhancement: weigh 301.5% alcohol, put it in a 100m3 beaker, add 3). 1. Heat the water in the tank, adjust the alcohol type, add 0.1% of the alcohol, and put it in the tank for use. 1% of the alcohol supplied by the user shall be screened and used. The color and light chemical packaging shall be carried out as specified in 7.1.3 and 7.1.1 of CB/T9722-1988. 4.11.3.3 Note: Number of chromatograms or recordings: 4.11.3.4 Microinjector 100
4.11.3.5 Typical working conditions: The columns and performance conditions of this standard are referred to in Table 1. Other chromatograms and working conditions of the same type can also be used: Typical diagram See Figure: Typical diagram, Table 2 Chromatogram # and typical working records
But the length of the column is slightly longer than the column
Slightly penetrated
Vaporization chamber performance
Selection tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is reduced by 1 year old 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)m× 100
- V M100
is the standard for the energy saving of the game (4.7.2.1)! The value is in milliliters (L); the standard effective value of the liquid concentration of the biochemical solution should be in moles per liter (1m=l/L).
is represented by grams per cubic centimeter:
is the value of the volume of the alcohol measured at temperature, in grams per cubic centimeter (m); the value of the titration (1.7.2.2) is in milliliters (L); the effective value of the titration rate is in grams per liter (rr/; the value of the mass fraction in the range is in grams per liter (g1ol) M: -17.03): to determine the effective value, take the average value of two parallel measurements as the final measurement, and wait for the two equal measurements before the final measurement. The relative difference is not much. 4. Determination of carbonyl compound content
According to GB:14F, the standard temperature of 1 month free alcohol is 4m: the standard temperature of H compound is /m, the temperature shall not be lower than R. The determination result is measured by formaldehyde (TIO). Take two parallel measurements and the average of the results is the test result. The relative deviation is not more than 4.9 Determination of thermal residual content
According to GB/T64.2, the standard temperature of 1 month free alcohol is 4m: the standard temperature of H compound is /m, the temperature shall not be lower than R. The determination result is measured by formaldehyde (TIO). Take two parallel measurements and the average of the results is the test result. The relative deviation is not more than 4.10 Magnetic formaldehyde washing test
4. 10.1 Method Summary
Under certain conditions, the colorimetric method is used to determine the color of the mixture with the standard aluminum cobalt standard. 4.0.2 Test
4.0.2.1 Solution 1
4, 0.2.2, 5, molten metal: CB/T31-3 preparation. 4.10.3 Receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (part from the four code more than home>mL4.10.4 wing analysis
4.10.4.1 The broken pieces of the currency in the test only do not contain the system with the crystal-colored substances, use or consult potassium acid-research type alcohol discussion device, then select the month water, use the disinfection method to dry or use the acid-resistant color range, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material-locked stirring, add 2>mL of acid, add acid at a speed of i+im, place at room temperature for 15ni-n, 5min, and put in a tube. Take another First, add 5mE platinum standard colorimetric solution to the colorimetric solution, and compare the color at a distance of 15 mm above the color film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not greater than that of the two parallel determinations.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Use gas chromatography to separate the alcohol and other impurities in the solution under the selected working conditions, and detect them with a high-purity ionization detector. Determine the quantitative calibration, and calculate the mass fraction of ethyl alcohol according to the internal standard method. 4.11.2 Test and materials
4.11.2. 1 No 2,2 alcohol || tt || 4.11.2.2 Rain alcohol: pure green color, content 4.11.2.3 degree self-consultation determination section || tt || 4.11.2.4 Wash 62314 body: .13mr ~ 2,2mma medium, the amount of ethanol is not more than 3.001%, if the 2,2 alcohol content is human! 4.11.2.5
Hydrogen, volume fraction not less than 99.5% by volume, collected and separated by sieve drying, purified by sieving; 4.11.2.7
4.11.2.8 Clean gas is collected and molecular weight is purified by drying: 4.11.3 Apparatus
4.11.3.1 Chromatograph: any type of gas chromatograph with good nuclear stability in accordance with the relevant provisions of GK722-188:
4.11.3.2 Color enhancement: weigh 301.5% alcohol, put it in a 100m3 beaker, add 3). 1. Heat the water in the tank, adjust the alcohol type, add 0.1% of the alcohol, and put it in the tank for use. 1% of the alcohol supplied by the user shall be screened and used. The color and light chemical packaging shall be carried out as specified in 7.1.3 and 7.1.1 of CB/T9722-1988. 4.11.3.3 Note: Number of chromatograms or recordings: 4.11.3.4 Microinjector 100
4.11.3.5 Typical working conditions: The columns and performance conditions of this standard are referred to in Table 1. Other chromatograms and working conditions of the same type can also be used: Typical diagram See Figure: Typical diagram, Table 2 Chromatogram # and typical working records
But the length of the column is slightly longer than the column
Slightly penetrated
Vaporization chamber performance
Selection tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is reduced by 1 year old 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)2. Pin drill 5 injection ratio about melt micro: connect CB/T31-3 preparation. 4.10.3 receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (part from the four code more than home>mL4.10.4 wing analysis
4.10.4.1 The broken pieces of the currency in the test only do not contain the system with the crystal-colored substances, use or consult potassium acid-research type alcohol discussion device, then select the month water, use the disinfection method to dry or use the acid-resistant color range, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material-locked stirring, add 2>mL of acid, add acid at a speed of i+im, place at room temperature for 15ni-n, 5min, and put in a tube. Take another First, add 5mE platinum standard colorimetric solution to the colorimetric solution, and compare the color at a distance of 15 mm above the color film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not greater than that of the two parallel determinations.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Use gas chromatography to separate the alcohol and other impurities in the solution under the selected working conditions, and detect them with a high-purity ionization detector. Determine the quantitative calibration, and calculate the mass fraction of ethyl alcohol according to the internal standard method. 4.11.2 Test and materials
4.11.2. 1. No 2-alcohol
4.11.2.2 Alcohol: pure blue, content 4.11.2.3 degree of purity 4.11.2.4 Washing 62314 body: .13mr~2,2mma medium, ethanol content is not less than 3.001%, if 2-alcohol content is less than 5%, deduct the bottom; 4. 11.2.5
Hydrogen, volume fraction not less than 99.5% by weight, dried and purified by molecular weight; 4. 11. 2. 5
Oxygen: volume fraction not less than 99.5% by weight, sieve dried and sieved, 4. 11.2.7
4.11.2.8 The clean gas is collected and purified by molecular drying: 4.11.3 Apparatus
4.11.3.1 The gas chromatograph is a gas chromatograph of any type, and the stability and quality of the gas chromatograph shall meet the requirements of GK722-188:
4.11.3.2 The color is added to the dust cabinet: weigh 301% alcohol, put it in a 100m beaker, add 3) A, etc. Heat the water in a water tank, adjust the alcohol to the required level, add 0.1% alcohol, gently stir and set aside, put it in a 1000m beaker, and then sieve it for later use. Light chemical CB/T97221988 7.1.3 and 7.1.1 are currently specified. 4.11.3.3 Note: chromatographic number of machines or recordings: 4.11.3.4 micro-injector 100
4.11.3.5 Typical working conditions: The columns and the performance conditions of this type are called tables in this standard. Other chromatographic conditions and working conditions of the same type can also be used: Typical diagrams are shown in Figure: Typical price table, Table 2 chromatographic # and typical working records
But the length of the rod is slightly transparent
Vaporization chamber
Delivery tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is downgraded by 1 year 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)2. Pin drill 5 injection ratio about melt micro: connect CB/T31-3 preparation. 4.10.3 receiver
4.10.3.1 to tube, 50 ml.;
G338—2004
4,10.3.2 Alcohol determination tube (part from the four code more than home>mL4.10.4 wing analysis
4.10.4.1 The broken pieces of the currency in the test only do not contain the system with the crystal-colored substances, use or consult potassium acid-research type alcohol discussion device, then select the month water, use the disinfection method to dry or use the acid-resistant color range, 4.10..2 and 30m sample in a 12m1.= angle bottle placed in an electric desire material-locked stirring, add 2>mL of acid, add acid at a speed of i+im, place at room temperature for 15ni-n, 5min, and put in a tube. Take another First, add 5mE platinum standard colorimetric solution to the colorimetric solution, and compare the color at a distance of 15 mm above the color film or mirror background. Take the two parallel determination results as the determination result: the difference between the two parallel determinations is not greater than that of the two parallel determinations.
4.1 Determination of ethyl alcohol content
4.11.1 Summary of the method
Use gas chromatography to separate the alcohol and other impurities in the solution under the selected working conditions, and detect them with a high-purity ionization detector. Determine the quantitative calibration, and calculate the mass fraction of ethyl alcohol according to the internal standard method. 4.11.2 Test and materials
4.11.2. 1. No 2-alcohol
4.11.2.2 Alcohol: pure blue, content 4.11.2.3 degree of purity 4.11.2.4 Washing 62314 body: .13mr~2,2mma medium, ethanol content is not less than 3.001%, if 2-alcohol content is less than 5%, deduct the bottom; 4. 11.2.5
Hydrogen, volume fraction not less than 99.5% by weight, dried and purified by molecular weight; 4. 11. 2. 5
Oxygen: volume fraction not less than 99.5% by weight, sieve dried and sieved, 4. 11.2.7
4.11.2.8 The clean gas is collected and purified by molecular drying: 4.11.3 Apparatus
4.11.3.1 The gas chromatograph is a gas chromatograph of any type, and the stability and quality of the gas chromatograph shall meet the requirements of GK722-188:
4.11.3.2 The color is added to the dust cabinet: weigh 301% alcohol, put it in a 100m beaker, add 3) A, etc. Heat the water in a water tank, adjust the alcohol to the required level, add 0.1% alcohol, gently stir and set aside, put it in a 1000m beaker, and then sieve it for later use. Light chemical CB/T97221988 7.1.3 and 7.1.1 are currently specified. 4.11.3.3 Note: chromatographic number of machines or recordings: 4.11.3.4 micro-injector 100
4.11.3.5 Typical working conditions: The columns and the performance conditions of this type are called tables in this standard. Other chromatographic conditions and working conditions of the same type can also be used: Typical diagrams are shown in Figure: Typical price table, Table 2 chromatographic # and typical working records
But the length of the rod is slightly transparent
Vaporization chamber
Delivery tube
5 n-.5 rr./s -nn~ 1 u
3? tl,'m n-.40 til..n'm
4iml.7min
5e -l,/min- ann ml./mi?
The upper system is downgraded by 1 year 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)/min- ann ml./mi?
The upper system is reduced by 1 year first 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004bZxz.net
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)/min- ann ml./mi?
The upper system is reduced by 1 age first 621:
2 rt, ..1? at.
of the acid:
of the isocyanate:
of the isocyanate,
of the green emission time n.:
typical chromatogram
Table 3 typical retention time
of the isocyanate
GR338—2004
4.11.4 Analysis steps
4.1.4.1 Isocyanate standard gas in the box: 0.5% isocyanate + 1c3ml of isocyanate. 4.1:4.2 The calibration gas is 0.5% of the purchased mass, put it in a bottle, the mass of the mass disk is 7m, use methanol to bridge the solution to measure the mass, and the obtained mass is, this is the ethanol standard liquid. Take 25 ml of ten pieces of coal, add 20 ml of each, use a micro-dish syringe (micro-single pipette) and inject 100 ml of each internal standard alcohol solution and Umi.3.05m-..c.3ml.0.2mE1.(Cml.) respectively. Dilute the sample with formaldehyde (the ethanol standard solution containing III1 is discarded), and use a micro-dish as the whole to dissolve the solution. Measure the chromatographic peaks of ethanol and isocyanate respectively, subtract the empty sample area from the formaldehyde sample area, and obtain Then, calculate the oxygen positive factor according to the formula (%): VA.XI
In the test:
is the mass value of ethanol in the standard solution, in grams (g); V-the volume of the ethanol standard solution, in liters (ml); is the calibration peak area of
;
is the integral of the volume of the standard solution, in liters (.)
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