Some standard content:
ICS71.080.30
Registration No. 942—1997
Chemical Industry Standard of the People's Republic of China
HG/T2916—1997
Diethanolamine for industrial use
Diethanolamine for industrial usePublished on July 30, 1997
Ministry of Chemical Industry of the People's Republic of China
Implemented on June 1, 1998
WHG/T2916—1997
This standard has revised ZB/TG17020—89. Compared with ZB/TG17020—89, its technical indicators and test methods have not changed. This standard has made corresponding modifications in editing, format and text according to GB/T1.1-1993 and GB/T1.4-88. Type I products in this standard are used for the production of pharmaceutical intermediates and fertilizers. Type I products are mainly used for the removal of acidic gases, etc. The indicators of Type I products in this standard are formulated with reference to MIL-E-50011C-1994, and the test methods adopt the corresponding methods of the national general method standards. From the date of entry into force, this standard will replace ZB/TG17020-89. This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is technically coordinated by the Beijing Chemical Research Institute of the Ministry of Chemical Industry. This standard is drafted by Huaiyin Qingjiang Petrochemical Co., Ltd. The main drafters of this standard are: Wan Liusheng, Xu Guangbao, and Wang Jiong. This standard was first issued in May 1989.
This standard is entrusted to the technical coordination unit of the basic organic product standardization of the Ministry of Chemical Industry for interpretation. I
W.bzsoso.con1Scope
Chemical Industry Standard of the People's Republic of China
Diethanolamine for industrial use
Diethanolamine for industrial useHG/T2916—1997
Replaces ZB/TG17020—89
This standard specifies the requirements, sampling, test methods, marking, packaging, transportation and storage of diethanolamine for industrial use. This standard applies to diethanolamine for industrial use obtained by the reaction of ethylene oxide and ammonia water. Molecular formula: (HOCH2CH2), NH
Relative molecular mass: 105.14 (according to the 1995 international relative atomic mass)2Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T601-88 Preparation of standard solutions for titration analysis (volumetric analysis) of chemical reagents GB/T603-88 Preparation of preparations and products used in test methods for chemical reagents (negISO6353/1:1982) GB/T1250-89 Methods for expressing and determining limit values GB/T4472-84 General rules for determination of density and relative density of chemical products GB/T6283-86 Determination of water content in chemical products by Karl Fischer method (general method) (eqvISo760t
3 Requirements
3.1 Appearance: light yellow viscous liquid above 30°C. 3.2 Industrial diethanolamine should meet the requirements of Table 1: Table 1 Items and indicators
Diethanolamine content, %||tt ||Ethanolamine content Tridecanolamine content, %
Relative density, d
Water content, %
Approved by the Ministry of Chemical Industry of the People's Republic of China on July 30, 1997
1.090~1.095
Implemented on June 1, 1998
W.bzsoso:cOn4 Vegetable sample
HG/T2916—1997
4.1 Products of uniform quality are considered a batch. The sampling of each batch of products shall not be less than 10% of the total number of barrels, and the sampling of small batches shall not be less than three barrels. Use clean and dry sampling tubes to sample equal amounts from the upper, middle and lower parts of each barrel, and the sample collected shall not be less than 500mL. 4.2 Mix the samples evenly and put equal amounts into two clean, dry and well-sealed containers. For good ground-mouth bottles, the bottle label shall indicate the product name, batch number, sampling date and name of the sampler. One bottle shall be used for analysis and inspection, and one bottle shall be kept as a sample for future reference. The sample shall be kept for two months. 4.3 The product user shall inspect the product within 10 days of arrival in accordance with the requirements, test methods and sampling requirements specified in this standard. When the manufacturer and the user have objections to the product quality, the two parties shall negotiate to resolve the dispute or ask the arbitration unit to arbitrate in accordance with this standard. 5 Test methods
5.1 Common matters
The reagents and water used in this method, unless otherwise required, shall be analytically pure reagents and distilled water or water of corresponding purity. The standard solutions, preparations and products used in this standard shall be prepared in accordance with GB/T601 and GB/T603 unless other requirements are specified. || tt||5.2 Determination and expression of test results
5.2.1 The test results shall be determined according to the rounded value comparison method of GB/T1250. If one of the test results does not meet the requirements of Table 1, samples should be taken from the double-volume packaging for re-inspection. Even if only one of the re-inspection results does not meet the requirements of Table 1, the entire batch of products shall be unqualified. 5.2.2 The final expression of the analysis results shall be consistent with the digits of the value required by the technical requirements. 5.3 Determination of diethanolamine content
5.3.1 Summary of the method
The total amine content of the sample is obtained by neutralization titration; then the amount of monoethanolamine and triethanolamine in the sample is determined separately; the amount of diethanolamine is obtained by subtracting the amount of monoethanolamine and triethanolamine from the total amine content, and the percentage of diethanolamine is obtained by conversion. 5.3.2 Determination of total amine content
5.3.2.1 Reagents and solutions
Hydrochloric acid standard titration solution: c(HCI)=0.5mol/L; b)
Bromocresol green-methyl red indicator solution (3+1), valid for two weeks. 5.3.2.2 Analysis steps
Weigh 1-1.5g of the sample (accurate to 0.0002g) in a 250mL conical flask, add 50mL of water to dissolve the sample and shake well; add 10 drops of bromocresol green-methyl red indicator solution, titrate with hydrochloric acid standard titration solution until wine red, record the volume of hydrochloric acid standard titration solution consumed, and perform a blank test at the same time.
5.3.2.3 Calculation of analysis results
The total amine content X of the sample in mol/g is calculated according to formula (1): (Vi-Vo).c
m×1000
Wherein: V1——the volume of the hydrochloric acid standard titration solution consumed by the titration sample, mL; V.——the volume of the hydrochloric acid standard titration solution consumed by the titration blank, mL; c——the actual concentration of the hydrochloric acid standard titration solution, mol/L, m——the sample volume, g.
(1)
The arithmetic mean of the results of two parallel determinations is taken as the determination result. The difference between the two parallel determination results shall not be greater than 2X10-5mol/g.
5.3.3 Calculation of the percentage of diethanolamine
W.bzsoso.conHG/T2916—1997
The percentage of diethanolamine Y2 is calculated according to formula (2): Y2=（X-X1-Xs）X105.1X100
Wherein, X-
total amine content in a sample, mol/g;
the amount of monoethanolamine (5.4.1), mol/g; the amount of triethanolamine (5.4.2), mol/g; the molar mass of diethanolamine, g/mol. 5.4 Determination of monoethanolamine and triethanolamine content 5.4.1 Determination of monoethanolamine content
5.4.1.1 Summary of method
Primary amines react with nitrous acid to release nitrogen, while secondary and tertiary amines do not release nitrogen when they react with nitrous acid. The content of primary amines can be calculated by measuring the volume of nitrogen generated by the reaction.
5.4.1.2 Instruments
Amino acid nitrogen tester (Fan's) is shown in Figure 1.6
An lenhuaed en lurdar
1—reagent inlet; 2—reactor; 3—sample inlet; 4—level ball; 5—gas measuring tube 6—straight connecting tube; 7-gas absorber; a, b, c, d, e—piston Figure 1 Amino acid nitrogen tester (Fan's)
Reagents and solutions
Glacial acetic acid;
Sodium nitrite solution: 300g/L, prepared before use; Alkaline potassium permanganate solution: dissolve 25g sodium hydroxide and 60g potassium permanganate in 1000mL water. 5.4.1.4 Analysis steps
Weigh 10g of the sample (accurate to 0.1g) in a 100mL volumetric flask, add water to dilute to the scale, shake well for use. The installation of the amino acid nitrogen tester is shown in Figure 1. First, apply piston oil evenly to pistons a, b, c, d, and e and install them. Then fill the gas absorber 7 with alkaline potassium permanganate solution, open pistons b, d, and e to allow the water in the level ball 4 to flow through the gas measuring tube 5 to stop d, close d and lower 4 at the same time, and the water in 5 should not drop at this time (otherwise the piston will leak, and the piston oil should be re-applied and the above operation should be repeated). Rotate piston e to make the alkaline potassium permanganate solution in 7 stop at e, and rotate d to connect the reactor 2 to the atmosphere. Take 10mL of glacial acetic acid and 45mL of sodium nitrite solution, and add them into reactor 2 through reagent inlet 1 (the air and newly generated nitric oxide gas in 2 are emptied through piston d at this time). When 2-5mL of solution is left in 1, close d and shake 2 to gradually press part of the solution in 2 into tube 1. When 18-20mL of solution is left in 2, close piston a. Rinse sample inlet 3 with sample solution (23 times), measure 10mL of sample solution, turn piston d to connect reactor 2 with gas measuring tube 5, and add 9mL of sample solution into 2 using piston c. Shake the reactor 2 (5-10 minutes) to allow the gas generated therein to flow into the gas burette 5, lift the level ball 4 and rotate the piston e to press all the gas in 5 into the gas absorber 7, close the piston e, shake the gas absorber 7 (1 minute) to absorb nitrogen oxides in the gas, rotate the piston e to return the residual gas in the gas absorber 7 to the gas burette 5, keep the level ball 4 parallel to the liquid surface of the gas burette 5, observe the volume reading in the gas burette 5, and repeat the absorption until the volume reading remains unchanged. Use water for a blank test under the same conditions, and record the temperature and pressure in the room during the measurement. 5.4.1.5 Calculation of analysis results
The amount of monoethanolamine X1 and the mass percentage Y1 in mol/g are calculated according to formula (3) and (4) respectively: WV) i
m1×100×1000
(V.-Vo).a
mX1260
Y1=XiX61.08X100
Wherein: V—the volume of nitrogen released by the sample, mL; V. —the volume of nitrogen released by the blank, mL; a—the amount of amino nitrogen equivalent to 1mL of nitrogen (see Appendix A), mg; m1—the amount of sample, g;
14——the atomic weight of nitrogen;
Y1——the percentage of ethanolamine, %; 61.08-
the molar mass of monoethanolamine, g/mol.
（3）
（4）
Take the arithmetic mean of the two parallel determination results in formula (4) as the determination result. The difference between the two parallel determination results shall not exceed 0.03%. 5.4.2 Determination of triethanolamine content
5.4.2.1 Method summary
Ethanolamine and diethanolamine can react with acetic anhydride to undergo acetylation in methanol medium, while triethanolamine does not react with acetylation in methanol medium. The triethanolamine content can be determined by non-aqueous titration using hydrochloric acid-ethanol standard solution. 5.4.2.2 Reagents and solutions
Anhydrous methanol;
Acetic anhydride;
Hydrochloric acid-ethanol standard titration solution: c(HCI)=0.05mol/L; Sodium hydroxide-ethanol standard titration solution: c(NaOH)=0.05mol/L; Methyl orange-xylene cyanol FF indicator solution: dissolve 0.15g methyl orange and 0.08g xylene cyanol FF in 100mL water. Note: 1) Xylene cyanol FF (xylenecyanalFF, also known as xylene blue FF, xylene yellow FF) This reagent is imported and packaged by Shanghai Chemical Reagent Purchasing and Supply Station.
5.4.2.3 Analysis steps
HG/T2916—1997
Put 50mL of anhydrous methanol in a 250mL iodine volumetric flask, add 1-2 drops of methyl orange-xylene cyanol FF indicator solution, adjust to amber color with hydrochloric acid-ethanol standard titration solution or sodium hydroxide-ethanol standard titration solution, then weigh 1-1.5g of the sample (accurate to 0.0002g) in the above iodine volumetric flask, add 10mL of acetic anhydride, cover the bottle stopper, shake well, let stand at room temperature for 30min, and continue to titrate with hydrochloric acid-ethanol standard titration solution until amber color. Record the volume of hydrochloric acid-ethanol standard titration solution consumed. 5.4.2.4 Calculation of analysis results
The amount of triethanolamine in mol/g X: and the percentage of triethanolamine Ys are calculated according to formula (5) and (6) respectively: V.ci
m2×1000
V·ciX0.1492
Wherein, V: - volume of hydrochloric acid-ethanol standard titration solution consumed in titration, mL - actual concentration of hydrochloric acid-ethanol standard titration solution, mol/L; Ci
sample volume, g.
The amount of triethanolamine in grams equivalent to 1.00mL hydrochloric acid standard solution [c (HC1) - 1.000mol/L]. The arithmetic mean of the two parallel determination results in formula (6) is taken as the determination result. The difference between the two parallel determination results shall not be greater than 0.03%.
Calculation of the content of monoethanolamine and triethanolamine The total percentage content Y of ethanolamine and triethanolamine is calculated according to formula (7): Y-Y+Ys
Wu Zhong: Yi
monoethanolamine percentage content,
triethanolamine percentage content.
5.5 Determination of relative density
According to GB/T4472 Section 2.3.1 pycnometer method, the density of the sample at 30℃ and water at 20℃ is determined respectively. The relative density d of the sample is calculated according to formula (8):
Where: d is the relative density of the sample at 30℃ relative to water at 20℃; the density of the sample at 30℃ is
the density of water at 20℃.
Take the arithmetic mean of the results of two parallel determinations as the determination result. The difference between the two parallel determination results shall not be greater than 0.001. 5.6 Determination of moisture
Determine by visual method according to GB/T6283.
6 Marking, packaging, transportation and purchase and storage
(8)
6.1 The packaging barrels of industrial diethanolamine should clearly indicate: manufacturer name, address, product name, model, registered trademark, net weight, production date or production batch number and product standard number. 5
w.bzsoso：comHG/T2916—1997
2 Industrial diethanolamine is packaged in spray-coated barrels or new iron barrels. The packaging is divided into three types: (220±0.5)kg, (200±0.5)kg or 6.2
(180±0.5)kg per barrel. The average net weight of each batch of products per barrel is 220kg, 200kg or 180kg. 6.3 Industrial diethanolamine should be leak-proof, fire-proof and moisture-proof during transportation. 6.4 Industrial diethanolamine should be stored in a clean, cool, dry and ventilated warehouse. o
Appendix A (Standard Appendix)
1mL nitrogen at 11~30℃ and 97.06~102.66KPa atmospheric pressure is equivalent to 97.06 milligrams of amino nitrogen
A1 (End)5 Calculation of analysis results
The amount of monoethanolamine X1 and the mass percentage Y1 in mol/g are calculated according to formula (3) and (4) respectively: WV) i
m1×100×1000bzxZ.net
(V.-Vo).a
mX1260
Y1=XiX61.08X100
Wherein: V—the volume of nitrogen released by the sample, mL; V. —the volume of nitrogen released by the blank, mL; a—the amount of amino nitrogen equivalent to 1mL of nitrogen (check Appendix A), mg; m1—the amount of sample, g;
14——the atomic weight of nitrogen;
Y1—the percentage of ethanolamine, %; 61.08-
the molar mass of monoethanolamine, g/mol.
（3）
（4）
Take the arithmetic mean of the two parallel determination results in formula (4) as the determination result. The difference between the two parallel determination results shall not exceed 0.03%. 5.4.2 Determination of triethanolamine content
5.4.2.1 Method summary
Ethanolamine and diethanolamine can undergo acetylation reaction with acetic anhydride in methanol medium, while triethanolamine does not undergo acetylation reaction in methanol medium. The triethanolamine content can be determined by non-aqueous titration using hydrochloric acid-ethanol standard solution. 5.4.2.2 Reagents and solutions
Anhydrous methanol;
Acetic anhydride;
Hydrochloric acid-ethanol standard titration solution: c(HCI)=0.05mol/L; Sodium hydroxide-ethanol standard titration solution: c(NaOH)=0.05mol/L; Methyl orange-xylene cyanol FF indicator solution: dissolve 0.15g methyl orange and 0.08g xylene cyanol FF in 100mL water. Note: 1) Xylene cyanol FF (xylenecyanalFF, also known as xylene blue FF, xylene yellow FF) This reagent is imported and packaged by Shanghai Chemical Reagent Purchasing and Supply Station.
5.4.2.3 Analysis steps
HG/T2916—1997
Put 50mL of anhydrous methanol in a 250mL iodine volumetric flask, add 1-2 drops of methyl orange-xylene cyanol FF indicator solution, adjust to amber color with hydrochloric acid-ethanol standard titration solution or sodium hydroxide-ethanol standard titration solution, then weigh 1-1.5g (accurate to 0.0002g) of the sample in the above iodine volumetric flask, add 10mL of acetic anhydride, cover the bottle stopper, shake well, let stand at room temperature for 30min, and continue to titrate with hydrochloric acid-ethanol standard titration solution until amber color. Record the volume of hydrochloric acid-ethanol standard titration solution consumed. 5.4.2.4 Calculation of analysis results
The amount of triethanolamine in mol/g X: and the percentage of triethanolamine Ys are calculated according to formula (5) and (6) respectively: V.ci
m2×1000
V·ciX0.1492
Wherein, V: - the volume of hydrochloric acid-ethanol standard titration solution consumed in titration, mL - the actual concentration of hydrochloric acid-ethanol standard titration solution, mol/L; Ci
the amount of sample, g.
The amount of triethanolamine in grams equivalent to 1.00mL of hydrochloric acid standard solution [c (HC1) - 1.000mol/L]. The arithmetic mean of the two parallel determination results in formula (6) is taken as the determination result. The difference between the two parallel determination results shall not be greater than 0.03%.
Calculation of the content of monoethanolamine and triethanolamine The total percentage content Y of ethanolamine and triethanolamine is calculated according to formula (7): Y-Y+Ys
Wu Zhong: Yi
monoethanolamine percentage content,
triethanolamine percentage content.
5.5 Determination of relative density
According to GB/T4472 Section 2.3.1 pycnometer method, the density of the sample at 30℃ and water at 20℃ is determined respectively. The relative density d of the sample is calculated according to formula (8):
Where: d is the relative density of the sample at 30℃ relative to water at 20℃; the density of the sample at 30℃ is
the density of water at 20℃.
Take the arithmetic mean of the results of two parallel determinations as the determination result. The difference between the two parallel determination results shall not be greater than 0.001. 5.6 Determination of moisture content
Determine by visual method according to GB/T6283.
6 Marking, packaging, transportation and purchase and storage
(8)
6.1 The packaging barrels of industrial diethanolamine should clearly indicate: manufacturer name, address, product name, model, registered trademark, net weight, production date or production batch number and product standard number. 5
w.bzsoso：comHG/T2916—1997
2 Industrial diethanolamine is packaged in spray-coated barrels or new iron barrels. The packaging is divided into three types: (220±0.5)kg, (200±0.5)kg or 6.2
(180±0.5)kg per barrel. The average net weight of each batch of products per barrel is 220kg, 200kg or 180kg. 6.3 Industrial diethanolamine should be leak-proof, fire-proof and moisture-proof during transportation. 6.4 Industrial diethanolamine should be stored in a clean, cool, dry and ventilated warehouse. o
Appendix A (Standard Appendix)
1mL nitrogen at 11~30℃ and 97.06~102.66KPa atmospheric pressure is equivalent to 97.06 milligrams of amino nitrogen
A1 (End)5 Calculation of analysis results
The amount of monoethanolamine X1 and the mass percentage Y1 in mol/g are calculated according to formula (3) and (4) respectively: WV) i
m1×100×1000
(V.-Vo).a
mX1260
Y1=XiX61.08X100
Wherein: V—the volume of nitrogen released by the sample, mL; V. —the volume of nitrogen released by the blank, mL; a—the amount of amino nitrogen equivalent to 1mL of nitrogen (check Appendix A), mg; m1—the amount of sample, g;
14——the atomic weight of nitrogen;
Y1—the percentage of ethanolamine, %; 61.08-
the molar mass of monoethanolamine, g/mol.
（3）
（4）
Take the arithmetic mean of the two parallel determination results in formula (4) as the determination result. The difference between the two parallel determination results shall not exceed 0.03%. 5.4.2 Determination of triethanolamine content
5.4.2.1 Method summary
Ethanolamine and diethanolamine can undergo acetylation reaction with acetic anhydride in methanol medium, while triethanolamine does not undergo acetylation reaction in methanol medium. The triethanolamine content can be determined by non-aqueous titration using hydrochloric acid-ethanol standard solution. 5.4.2.2 Reagents and solutions
Anhydrous methanol;
Acetic anhydride;
Hydrochloric acid-ethanol standard titration solution: c(HCI)=0.05mol/L; Sodium hydroxide-ethanol standard titration solution: c(NaOH)=0.05mol/L; Methyl orange-xylene cyanol FF indicator solution: dissolve 0.15g methyl orange and 0.08g xylene cyanol FF in 100mL water. Note: 1) Xylene cyanol FF (xylenecyanalFF, also known as xylene blue FF, xylene yellow FF) This reagent is imported and packaged by Shanghai Chemical Reagent Purchasing and Supply Station.
5.4.2.3 Analysis steps
HG/T2916—1997
Put 50mL of anhydrous methanol in a 250mL iodine volumetric flask, add 1-2 drops of methyl orange-xylene cyanol FF indicator solution, adjust to amber color with hydrochloric acid-ethanol standard titration solution or sodium hydroxide-ethanol standard titration solution, then weigh 1-1.5g of the sample (accurate to 0.0002g) in the above iodine volumetric flask, add 10mL of acetic anhydride, cover the bottle stopper, shake well, let stand at room temperature for 30min, and continue to titrate with hydrochloric acid-ethanol standard titration solution until amber color. Record the volume of hydrochloric acid-ethanol standard titration solution consumed. 5.4.2.4 Calculation of analysis results
The amount of triethanolamine in mol/g X: and the percentage of triethanolamine Ys are calculated according to formula (5) and (6) respectively: V.ci
m2×1000
V·ciX0.1492
Wherein, V: - the volume of hydrochloric acid-ethanol standard titration solution consumed in titration, mL - the actual concentration of hydrochloric acid-ethanol standard titration solution, mol/L; Ci
the amount of sample, g.
The amount of triethanolamine in grams equivalent to 1.00mL of hydrochloric acid standard solution [c (HC1) - 1.000mol/L]. The arithmetic mean of the two parallel determination results in formula (6) is taken as the determination result. The difference between the two parallel determination results shall not be greater than 0.03%.
Calculation of the content of monoethanolamine and triethanolamine The total percentage content Y of ethanolamine and triethanolamine is calculated according to formula (7): Y-Y+Ys
Wu Zhong: Yi
monoethanolamine percentage content,
triethanolamine percentage content.
5.5 Determination of relative density
According to GB/T4472 Section 2.3.1 pycnometer method, the density of the sample at 30℃ and water at 20℃ is determined respectively. The relative density d of the sample is calculated according to formula (8):
Where: d is the relative density of the sample at 30℃ relative to water at 20℃; the density of the sample at 30℃ is
the density of water at 20℃.
Take the arithmetic mean of the results of two parallel determinations as the determination result. The difference between the two parallel determination results shall not be greater than 0.001. 5.6 Determination of moisture content
Determine by visual method according to GB/T6283.
6 Marking, packaging, transportation and purchase and storage
(8)
6.1 The packaging barrels of industrial diethanolamine should clearly indicate: manufacturer name, address, product name, model, registered trademark, net weight, production date or production batch number and product standard number. 5
w.bzsoso：comHG/T2916—1997
2 Industrial diethanolamine is packaged in spray-coated barrels or new iron barrels. The packaging is divided into three types: (220±0.5)kg, (200±0.5)kg or 6.2
(180±0.5)kg per barrel. The average net weight of each batch of products per barrel is 220kg, 200kg or 180kg. 6.3 Industrial diethanolamine should be leak-proof, fire-proof and moisture-proof during transportation. 6.4 Industrial diethanolamine should be stored in a clean, cool, dry and ventilated warehouse. o
Appendix A (Standard Appendix)
1mL nitrogen at 11~30℃ and 97.06~102.66KPa atmospheric pressure is equivalent to 97.06 milligrams of amino nitrogen
A1 (End)5 Determination of relative density
According to GB/T4472 Section 2.3.1, the density of the sample at 30℃ and water at 20℃ are measured respectively by the pycnometer method. The relative density d of the sample is calculated according to formula (8):
Wherein: d is the relative density of the sample at 30℃ relative to water at 20℃; one is the density of the sample at 30℃
one is the density of water at 20℃.
The arithmetic mean of the results of two parallel determinations is taken as the determination result. The difference between the two parallel determination results shall not be greater than 0.001. 5.6 Determination of moisture
Determine by visual method according to GB/T6283.
6 Marking, packaging, transportation and storage
(8)
6.1 The packaging barrels of industrial diethanolamine should be clearly marked with: manufacturer name, factory address, product name, model, registered trademark, net weight, production date or production batch number and product standard number. 5
w.bzsoso：comHG/T2916—1997
2 Industrial diethanolamine is packaged in plastic-sprayed barrels or new iron barrels. The packaging is divided into three types: (220±0.5) kg, (200±0.5) kg or 6.2
(180±0.5) kg per barrel. The average net weight of each batch of products per barrel is 220kg, 200kg or 180kg. 6.3 Industrial diethanolamine should be leak-proof, fire-proof and moisture-proof during transportation. 6.4 Industrial diethanolamine should be stored in a clean, cool, dry and ventilated warehouse. o
Appendix A (Standard Appendix)
1mL nitrogen is equivalent to 97.06 milligrams of amino nitrogen at 11~30℃ and 97.06~102.66KPa atmospheric pressure
A1 (End)5 Determination of relative density
According to GB/T4472 Section 2.3.1, the density of the sample at 30℃ and water at 20℃ are measured respectively by the pycnometer method. The relative density d of the sample is calculated according to formula (8):
Wherein: d is the relative density of the sample at 30℃ relative to water at 20℃; one is the density of the sample at 30℃
one is the density of water at 20℃.
The arithmetic mean of the results of two parallel determinations is taken as the determination result. The difference between the two parallel determination results shall not be greater than 0.001. 5.6 Determination of moisture
Determine by visual method according to GB/T6283.
6 Marking, packaging, transportation and storage
(8)
6.1 The packaging barrels of industrial diethanolamine should be clearly marked with: manufacturer name, factory address, product name, model, registered trademark, net weight, production date or production batch number and product standard number. 5
w.bzsoso：comHG/T2916—1997
2 Industrial diethanolamine is packaged in plastic spray barrels or new iron barrels. The packaging is divided into three types: (220±0.5) kg, (200±0.5) kg or 6.2
(180±0.5) kg per barrel. The average net weight of each batch of products per barrel is 220kg, 200kg or 180kg. 6.3 Industrial diethanolamine should be leak-proof, fire-proof and moisture-proof during transportation. 6.4 Industrial diethanolamine should be stored in a clean, cool, dry and ventilated warehouse. o
Appendix A (Standard Appendix)
1mL nitrogen is equivalent to 97.06 milligrams of amino nitrogen at 11~30℃ and 97.06~102.66KPa atmospheric pressure
A1 (End)
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