Some standard content:
Chemical Industry Standard of the People's Republic of China
Color Fixing Agent M
Subject Content and Scope of Application
HG/T2671-95
Replaces HG/T 2-381-82
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of Color Fixing Agent M. This standard applies to water-soluble primary shrinkage of copper-containing dicyandiamide formaldehyde resin, namely Color Fixing Agent M. Color Fixing Agent M is mainly used as a color fixing auxiliary in the printing and dyeing industry.
2 Reference standards
GB3920
Grey scale for assessing color change
Grey scale for assessing staining
Test method for color fastness of textiles to rubbing
GB3921
Test method for color fastness of textiles to washing
G3 3922
Test method for color fastness of textiles to perspiration
3 Technical requirements
Appearance: blue or green viscous liquid.
The quality index of color fixing agent M shall meet the requirements of Table 1. Table 1
Dissolution performance
Color fixing ability.%
Copper content, head
The color fastness of color fixing agent M shall not be lower than the requirements of Table 2. Table 2
Contribution tide blue
4 Test method
Fixing treatment
40℃ soap wash
Fixing agent M 2.5%
4.1 Determination of appearance
Wool and cloth
Approved by the Ministry of Chemical Industry of the People's Republic of China on April 5, 1995 356
Full bath, latent cleaning
For powdered color fixing agent Y standard product 47.5~52.51. 8~-2. 0
Wool and wool
Wool and wool
Implemented on January 1, 1996
Measured by visual method,
HG/T 2671—95
4.2 Determination of solubility
Weigh 5g of standard sample and test sample, add 25ml of steamed stuffing water, stir evenly at room temperature, make it completely dissolved and then visually evaluate. 4.3 Determination of color fixation ability
4.3.1 Materials and instruments
4.3.1.1 Filter paper: 12.5cm slow qualitative filter paper. 4.3.1.2 Erlenmeyer flask: capacity is 125nL, 4.3.1.3 Erlenmeyer funnel: 75mm
4.3.1.4 Colorimetric tube: capacity is 25~~50mL, 4.3.2 Preparation of solution
4.3.2.1 Preparation of 5g/L Direct Acid-resistant Red 4BS (GB/T1651) solution Weigh 5g (accurate to 0.0005g) of Direct Acid-resistant Red 4BS, add a small amount of distilled water to make it into a slurry, and then gradually add distilled water to dissolve it. Transfer to a 100mL volumetric flask, dilute to scale with water, spread evenly and filter for later use. 4.3.2.25g/L powdered color fixer Y standard sample solution Weigh 1.25g of the standard sample (accurate to 0.0005g), add a small amount of distilled water to dissolve it, transfer to a 250ml volumetric flask, dilute to scale with water, and shake. Prepare and use immediately.
4.3.2.310g/L color fixer M sample solution Weigh 2.5g of the sample (accurate to 0.0005g), and prepare according to the method in 4.3.2.2 above. 4. 3.3 Analysis steps
Prepare the solutions as specified in Table 3 and place them in numbered conical flasks. Table 3
5g/l, direct acid-resistant red 4BS solution mL
5g/l. Powdered color fixer Y standard solution, ml10g/l. Color fixer M sample solution ml.
Distilled water + ml.
Wipe the above solution thoroughly and let it stand for 10 minutes to allow direct acid-resistant red 4BS and color fixer M to form a complex salt precipitate. Use double-layer filter paper to filter through a triangular tidal funnel into a colorimetric tube. Compare the color of the filtrate. The chromaticity of filtrate No. 5 should be Similar to filtrate No. 3 4.4 Determination of copper content
4.4.1 Reagents and solutions
4.4.1.1 Sulfuric acid (GB/T625), chemically pure: 5% (m/m) solution. 4.4.1.2 Potassium iodide (GB/T1272), chemically pure. 4.4.1.3 Soluble starch: 0.5% solution. 4.4.1.4 Potassium thiocyanate (GB/T648), chemically pure: 20% (m/m) solution. 4.4.1.5 Sodium thiosulfate (GB/T637) standard titration solution: [c(Na2S,(),))=0.0mol/L. 4.4.2 Analysis steps
Accurately take 50mL of 10g/L color fixative M sample solution and place it in an iodine bottle. Add 50mL of 5% sulfuric acid solution and shake. Then add 3g of potassium iodide. After dissolving, let it stand in a dark place for 5min. Titrate with sodium thiosulfate standard titration solution until the brown color becomes lighter. Then add 1ml of starch solution. When the titration is close to the endpoint, add 10mL of 20% potassium thiocyanate solution. Titrate until the blue color of the solution disappears, which is the endpoint. 4.4.3 Calculation
The mass percentage of copper (X) is calculated as follows: 357
HG/T2671-95
Wherein: V is the volume of sodium thiosulfate standard titration solution consumed in titration, mL; the concentration of sodium thiosulfate standard titration solution, mol/l; the mass of the sample g:
the mass of copper in grams equivalent to 1.00mL sodium thiosulfate standard titration solution (Cc(Na2S.0))=1.000mol/).
4.5 Determination of color fastness
4.5.1 Materials
Fabric: 20g of 25lex/28tex (23×21) refined bleached muslin. 4.5.2 Reagents and solutions
4.5.2.1 Direct Lake Blue 5B (GB/r1650): 1g/100ml. 4.5.2.2 Remibond A: T product.
4.5.2.3 Anhydrous sodium carbonate (CB/T639) chemically pure: 10% (m/m) solution. 4.5.2.4 Anhydrous sodium sulfate (GB/T9835) chemically pure: 10% (m/m) solution. 4.5.3 Fabric treatment
Weigh 3g of Remibond, add 10mL of 10% anhydrous sodium carbonate solution, dilute with water to 1000mL, immerse 20g of plain muslin in the solution, boil for 30min, take out, and wash with clean water. 4.5.4 Dyeing
Prepare the dye solution according to Table 4 (based on 20g of fabric). Table 4
Reagents and solutions
Ig/10mL direct lake blue 5B solution, ml
Remibond A
10% (m/m) sodium carbonate solution ml
10% (m/m) sodium sulfate solution, ml
Distilled water, ml.
Dye 20g of treated muslin at room temperature, stir frequently, heat to 95-100℃ within 15tmin, and keep warm for 30min. After dyeing, take out, rinse with clean water 3 times, and dry. 4.5.5 Fixation treatmentWww.bzxZ.net
Take 25mL of 10g/L fixative M solution (based on 10g fabric), add water to 200mL, immerse 10g of dyed muslin in the solution, treat at 50-55℃ for 30min, take out, rinse with clean water 2 times, dry and iron. 4.5.6 Determination of color fastness
4.5.6.1 Determination of color fastness to rubbing.
Perform according to the method specified in GB3920.
4.5.6.2 Determination of color fastness to washing
Perform according to the method specified in GB3921.
4.5.6.3 Determination of color fastness to perspiration
Perform according to the method specified in GB3922.
4.5.7 Evaluation of fastness grade
Perform according to the methods specified in GB250 and CB251. 358
5 Inspection rules
5.1 Inspection classification
HG/T 2671—95
Articles 3.1 and 3.2 of the technical requirements of this standard are factory inspection items. All items in the technical requirements of this standard are type inspection items. If one of the six situations specified in Article 6.6.1 of GR1.3 occurs, type inspection should be carried out: in normal production, it should be carried out once a year. 5.2 Sampling method
Select 10% of the barrel samples from each batch of products (a batch is a homogenized product mixed once). Before sampling, the dust and dirt on the barrel cover should be removed to prevent foreign impurities from falling into the product. Use a sampling tube to take samples from the top, middle and bottom of the barrel. After the sample is fully mixed, 100g is taken out and divided into two clean and dry glass bottles with ground stoppers. The wells are sealed with paraffin and labeled with the production name, product name, batch number, sampling date, etc. One bottle is for inspection and one bottle is retained for future reference. 5.3 Production Inspection
The color fixer M product should be inspected by the quality inspection department of the manufacturer. The manufacturer should ensure that all products shipped out of the factory meet the technical requirements of this standard, and each batch of products shipped out of the factory should be accompanied by a quality certificate in a certain format. 5.4 User Acceptance
The user has the right to accept the product in accordance with the provisions of this standard. When the supply and demand parties have objections to the product quality, they can negotiate to resolve the issue.
5.5 Re-inspection
If one indicator of the inspection result does not meet the requirements of this standard, re-samples should be taken from twice the amount of packaging barrels for re-inspection. Even if only one indicator of the re-inspection result does not meet the requirements of this standard, the entire batch of products will be unqualified. 5.6 Arbitration
When the supply and demand parties have objections to the product quality and need arbitration, the arbitration institution can be selected by both parties and conduct reverse verification according to the method specified in this standard.
6 Marking, packaging, transportation, storage
6.1 The packaging barrels of commodities should be clearly marked with the product name, standard number, trademark, batch number, net weight, production date, and manufacturer name.
6.2 Fixing agent M is packed in plastic barrels lined with plastic, and the net weight of each barrel is 50kg. 6.3 It should be handled with care during transportation, and the barrels should not be turned upside down. 6.4 Fixing agent M should be stored in a cool, dry and ventilated place, sealed and stored, and the storage period is one year. Additional instructions:
This standard was proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Shenyang Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Shanghai Additive Factory. The main drafters of this standard were Zhou Wenjuan and Zhang Peilan. From the month of implementation of this standard, the former Ministry of Chemical Industry standard HG/T2-381-82 "Fixing Agent M" will be invalid. 350
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