QB/T 2739-2005 Common test methods for detergents - Preparation of test solutions for titration analysis (volume analysis)
Some standard content:
TCS 71.100.35
Classification number: r43
Registration number: 164*9-2005
Light Industry Standard of the People's Republic of China
QB/T2739—2005Www.bzxZ.net
General test methods for washing products
Preparation of test solutions for titration analysis (volume analysis) products2005-07-26 release
National Development and Reform Commission of the People's Republic of China2006-01-01 implementation
regulatory documents
reporting practice
preparation and calibration of vehicle standard temperature titration liquid
real oxidation adjustment standard gold material liquid
to the leading chemical sweep-alcohol washing dripping liquid
super stock standard titration wave
acid Acid standard disinfection bath
Acid disinfection standard oil standard solution
Aluminum standard full density solution
Nitric acid standard solution
Summer chemical needle standard titration float
Magnesium chloride (or stock reading) standard disinfection bath 4.1m
Fluidized standard fluidization solution
Cultural sodium standard biomass determination tank
Sodium sulfate special energy titration solution
Sulfur magnetic adjustment standard Standard solution
Sulfurized acid standard solution
Acid treatment iron ring moistening solution
Ethyl acetate, acetic acid, standard solution of acetic acid
Standard titration solution
Potassium hydroxide solution
Hexaoxygen transfer standard solution
Xuan acid titration solution||tt ||For the solution of duyingliu acid
Mature military age standard reduction solution
5-hold small agent preparation
Chengchang small man
Luokou phenol-174 indicator leakage
Gel indicator liquid
Monchitaifeibubo
Needle hair Dingqing indicator
Calcium indicator
: Gezhi indicator
TTTKANKAa
QB/T 2739-2005
Q8/T 273920C5
5.9 General safety indicator liquid
Light indicator liquid
Detection and monitoring indicator liquid
Two common codes Liu carbon marking indicator
Diagnosis and diagnosis of aldehyde potassium indicator liquid
1 Ink red indicator liquid
Orange and refreshing
Acid and moisture resistance indicator liquid
G specific configuration
6.1 General chemical sheet metal dissolving ratio
6.2 Acid-acetylene dissolving ratio
6.3 Water absorption ratio
6.4 Water absorption ratio without carbon dioxide
This standard is related to light industrial products.
QB/T 2739—2005
This standard is the standard for detergents produced by the surfactant method. The originating units of this standard are: National Detergent Products Quality Supervision and Inspection Commission (hereinafter referred to as the “National Detergent Products Quality Supervision and Inspection Commission”), Xi’an Kaimi Co., Ltd., Guangzhou Jianliang Co., Ltd.
The main drafters of the standard are: Zhang Dalian, De Gaohuai, Lin Shangqing, Ping Standard First Decision
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1 Scope
Common test methods for detergents
Preparation of test solution for titration analysis (volume analysis) QB/T2739-2005
This standard specifies the preparation method of test solution for titration analysis (volume analysis) of filtration products. This standard is applicable to the preparation of test solution commonly used in the analysis of filtration products: 2 Normative references
The following documents are adopted by this standard or are the references of this standard. The core is the referenced document of the third issue, and all of its modifications (except for errors) or revisions must not be applicable to the old ten standards. However, the latest versions of these documents can be used according to the specifications of this document. For documents without date, the following standards are applicable. GH/T Appendix 82192 Specifications and methods for water for analytical testing (91503606:193) 3 General provisions
3.1 Unless otherwise specified in this standard, the purity of the reagents used shall be above the standard purity. 3.2 The test water in the standard shall comply with the source specifications of the third-grade water in B6682-192. 3.3 The reference reagent used in calibration is the volumetric analysis reference reagent. 3.4 The standard titration reagent is used in the calibration process. Carbon code, dropper. The volumetric bottles and pipettes should be kept clean. 3.5 When calibrating the concentration of the standard alcohol solution, two people should work together, and the standard should be three times. The ratio of the range to the average value should not be greater than 0.3%, and the average value should be taken. The concentration value should be rounded to four significant figures. 3.6 When the concentration of the standard alcohol solution is less than 0.021mol/L, the standard alcohol solution should be diluted with boiled water before use, and recalibrated if necessary.
3.7 Standard titration solution for volumetric analysis should not be stored for more than one hour at a temperature of 15℃~25℃. It should not be stored for more than one month at a temperature of 25℃-30℃. When the solution becomes turbid, precipitates, or changes occur, it should be prepared.
3. The container for storing standard titration solution should not react with the solution. 4 Preparation and calibration of standard titration solution
4.1 Standard titration solution of sodium thiocarbide
4. 1. 1 Preparation
Take 100g of sodium thiocarbide and place it in 1% carbon dioxide solution. Shake the mixture. Place it in a container and seal it. According to the concentration given in Table 1, take the clear solution of the specified volume with a plastic bottle and dilute it to 100mL with water containing % carbon dioxide.
Q8,T 2739---2035
Build North State New Titration Liquid Wave Product
Fr.aOulol-L:
4.1.2 Calibration
Left Take No System Chemical Sodium Belt Liquid Supervision System
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Neighboring Two Middle Quality Inside
And Enter Three Days Chemical Belt Parts Loss
Report 1 For Feeling Da Ai Call Take 105T--110 Power Supply Box 1 Deep Space Also Zhi Work Belt Standard Agent Cold Car Electric Slow Hydrogen Clock Bill 0.001 Dry 250 Dimensional Shape, The Day's Light One Oxide Magnetic Request, Add 2 Age Filter (10g/, Use Hydroxide Roller The droplets tend to be light yellow and remain unchanged for 30 minutes. When the sodium hydroxide solution is introduced into the air, the concentration is expressed in mol/L (mal/L). The formula (1) is: (NaOH)
(P:-)M
. The unit is gram (F
). The unit is gram per mole (g/mol). The unit is: (m) The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: The unit is: 4.2 Potassium ammonia-ethanol standard titration 4.2.1 Preparation Weigh 10g potassium trioxide, dissolve in (10ml) non-oxidizing water, place in a sealed container and place for 24h. Dilute to 2000m with (500ml) high-purity ethanol, using a clean pool. See standard laboratory chemical concentration. k)]/(rul/1.:
4.2.2 Calibration
Quantity policy and economic improvement program
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Two 1 dynamic point quantity m/8
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Pull table 2 for wet concentration transfer double 1051 (℃ and bake in a medium to the world as a filler acid or pat to.M1g)m1.Kai model, dissolve a set of aldehydes, 2 drops of liquid limit 1/, the ratio of the element oxidation evaluation-sequence tour did not eliminate the percentage of filter under the red war effect, and the case does not report color, when the technical release fast white test, collect the meter before calibration, hydrogenation meter The concentration of the titration solution (K0H0) is expressed in liters (ml, according to formula (2): YKoNKAea
mx1000
, the unit is (
and the unit is liter (m) of potassium hydride-acetyl alcohol solution: the unit is the rate (ml).): QB/T2739-2005
. The unit of potassium hydride is gram per liter (g/m1 "M: KTTEH0): 204.22.4.3 Hydrochloric acid standard titration solution
4.3 1 Preparation
Check the corresponding depth of Table 3 and take the acid, put it into 1mml. water, select and. Table 3
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Change the hot acid identification
Move a standard reagent
Central carbon whole sodium mass m/g
Amount of water.n.
, prepare different selective or acid standard liquid tablets or 95) can be, the rest are consistent 4. 3.2 Calibration
Check table 3 Liu should weigh the work benchmark test water carbon sales (technical confirmation 0.0) 250 at 270-300 high temperature, fall within the standard amount, add 0 washing pure medium dynamic level - the same fiber: show liquid, with a good rate of liquid flow determination wet color change to the name color, steam 2 liters, net pressure to determine the color of the liquid net color: at the same time with water to do two tests
relatively determined IC, teaching position with rate per liter (mm, according to the formula ( >Calculate the difference in mm
In which:
Dead water Xiling solution is used as the accurate digit, the digit is six (g: The value of the hydrochloric acid product: The digit is to find the value of the volume of one mL! Empty test benefit test piece, the unit is liter (ml. The effective digit of the water iodide mass, the unit is gram per coulomb g/mol>[M<!NC.0.》52.9944.4 Standard sulfuric acid solution
Find the concentration in Table 4, put it into 1m water, remove it, and hook 3
Q8/7 2739—2005
Complete standard titration in commercial concentration
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4.4.2 Calibration
Tang Zhengyanji
Weigh the standard reagent
anhydrous sodium iodine (accurate to (.1)) and heat it in a high-temperature furnace until the concentration is 2:20. Put it in a 250ml standard bottle and add 1 drop of green-agar red liquid. Use the prepared sulfuric acid porcelain liquid to dissolve it completely. Then cool it down and titrate it until the liquid turns dark red. At the same time, use water to slowly titrate the standard test bottle. L,! .SO. The number is expressed in moles per liter (mo)/L, calculated according to formula (4): ,sO
mX1000
The exact value of the iodine-containing solution is g: The volume of the blank test solution is liters (m) and the number of iodine solutions is liters (m): The volume of the blank test solution ... 5 1. 2 Calibration
Weigh the working standard reagent (.22 to 0 [001]) in a 25-well bottle, dissolve it in water, add 10 starch solution: 10e3, titrate with sodium nitric acid prepared in milk on the left: when the end is near, add 3 drops of light-changing element (5/L), continue to titrate the emulsion pink, confirm the liquid density of the silver standard drop [AN,, the number of tubes per 7- (mol.) is expressed as: Calculate according to formula (5): TAeNO
The accurate value of the sodium ions is usually expressed as grams [m×1000
The effective amount of the sodium ions is expressed as · (mL): M——The value of the sodium ions: The unit is grams per mol (g/mol) [MNaCl) = 58.442]: 4. 5. 2 Method 2
Accurately transfer the working amount of silver nitrate 17.50 (accurate to 0.0001) to the acid solution, and then cool it down and dissolve it in distilled water, then dilute it to 1000mL, shake it well, and prepare it: QB/I2739—2005
Determine the density of the acid standard titration suspension [r (A containing NO,)", the value is expressed in Coul per liter (mo]/L. Calculate the exact amount of silver nitrate (AgNO,) by formula (6), in grams (): A
The value of the mass fraction of nitric acid, :
— The value of the molar mass of nitric acid: in grams (/mal) LM (AgNO)-1". M
4.6 Lead phosphate standard titration solution
cLPb(NO,),]-0.05 mal/L
4.6.1 Preparation
Weigh 17.0 mol of lead nitrate and dissolve it in 100 mL of nitric acid solution [+2000) and add. 4.6.2 Calibration
Pipette 25.0 mol of prepared nitric acid solution, 3 mL of acetic acid (acetic acid), 70 mL of benzylamine in water and 2 drops of diformic acid indicator solution (2 g/1.), and titrate with concentrated disodium ethyleneaminetetraacetic acid standard titration solution_c (EDTA dihydrate; = G.05 mol/L!) until the color of the lead nitrate standard titration solution is bright. The concentration of lead nitrate standard titration solution PbNO)], expressed in moles per liter) is expressed as follows: Calculate according to formula (5): TAeNO
The exact value of the sodium nitrate is usually expressed as [m×1000
- the effective amount of the aqueous solution of the aqueous solution, expressed as · (mL): M——the value of the sodium nitrate concentration: The unit is gram per mole (g/mol) [MNaCl)=58.442]: 4.5.2 Method 2
Accurately transfer the working volume of the acid solution to a constant amount of silver nitrate 17.50 (accurate to 0.0001), and then use benzene to remove the sodium nitrate. KAa
and cool to dissolve in water in a distillation tank, then dilute to 1000mL, shake well, and prepare for pressure: QB/I2739—2005
Determine the density of the standard titration suspension of acid [r (A containing NO,)", the value is expressed in Coul per liter (mo]/L. Calculate by formula (6), (AgNO,). MA
The exact number of silver nitrate discs, in grams (): A
The value of the mass fraction of nitric acid,:
—The value of the molar mass of nitric acid: The unit is gram (/mal) LM (AgNO)-1". M
4.6 Lead phosphate standard titration solution
cLPb(NO,),]-0.05 mal/L
4.6.1 Preparation
Weigh 17.0 mol of lead nitrate and dissolve it in 100 mL of nitric acid solution [+2000) and add. 4.6.2 Calibration
Pipette 25.0 mol of prepared nitric acid solution, 3 mL of acetic acid (acetic acid), 70 mL of benzylamine in water and 2 drops of diformic acid indicator solution (2 g/1.), and titrate with concentrated disodium ethyleneaminetetraacetic acid standard titration solution_c (EDTA dihydrate; = G.05 mol/L!) until the color of the lead nitrate standard titration solution is bright. The concentration of lead nitrate standard titration solution PbNO)], expressed in moles per liter) is expressed as follows: Calculate according to formula (5): TAeNO
The exact value of the sodium nitrate is usually expressed as [m×1000
- the effective amount of the aqueous solution of the aqueous solution, expressed as · (mL): M——the value of the sodium nitrate concentration: The unit is gram per mole (g/mol) [MNaCl)=58.442]: 4.5.2 Method 2
Accurately transfer the working volume of the acid solution to a constant amount of silver nitrate 17.50 (accurate to 0.0001), and then use benzene to remove the sodium nitrate. KAa
and cool to dissolve in water in a distillation tank, then dilute to 1000mL, shake well, and prepare for pressure: QB/I2739—2005
Determine the density of the standard titration suspension of acid [r (A containing NO,)", the value is expressed in Coul per liter (mo]/L. Calculate by formula (6), (AgNO,). MA
The exact number of silver nitrate discs, in grams (): A
The value of the mass fraction of nitric acid,:
—The value of the molar mass of nitric acid: The unit is gram (/mal) LM (AgNO)-1". M
4.6 Lead phosphate standard titration solution
cLPb(NO,),]-0.05 mal/L
4.6.1 Preparation
Weigh 17.0 mol of lead nitrate and dissolve it in 100 mL of nitric acid solution [+2000) and add. 4.6.2 Calibration
Pipette 25.0 mol of prepared nitric acid solution, 3 mL of acetic acid (acetic acid), 70 mL of benzylamine in water and 2 drops of diformic acid indicator solution (2 g/1.), and titrate with concentrated disodium ethyleneaminetetraacetic acid standard titration solution_c (EDTA dihydrate; = G.05 mol/L!) until the color of the lead nitrate standard titration solution is bright. The concentration of lead nitrate standard titration solution PbNO)], expressed in moles per liter
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