Some standard content:
Chemical Industry Standard of the People's Republic of China
Basic Brilliant Violet 3B
(Basic Violet 5BN)
Subject Content and Scope of Application
HG2083-91
This standard specifies the technical requirements, test methods, inspection rules, and various requirements for marking, packaging, transportation, and storage of basic brilliant violet 3B products.
This standard applies to basic brilliant violet 3B obtained by oxidation, alkalization, and acidification of N,N-dimethylaniline. This product is mainly used for carbon paper, lakes, and pharmaceuticals, and is also used for dyeing cotton, acrylic fiber, and silk. Structural formula:bZxz.net
(CH,?,N-
Molecular formula: C2H28N:CI
N+(CH,)
Relative molecular mass: 393.96 (according to the 1987 international relative atomic mass) Reference standards
General conditions for dyeing determination
GB2374
GB2381
GB2386
GB2399
3 Technical requirements
Determination of insoluble matter content in dyes
Determination of moisture content in dyes and dye intermediates Method for determination of color light and intensity of cationic dyes 3.1
Appearance: dark green glittering powder granules.
Basic brilliant violet 3B The main quality indicators shall comply with the provisions of Table 1. 3.2
Intensity (for standard products), divided
Color (with standard products)
Water-insoluble matter content, %
Water, %
Test method
Ministry of Chemical Industry of the People's Republic of China approved on July 17, 1991
Approximately ~ slightly
Implementation on January 1, 1992
4.1 Appearance
Measured by visual method.
4.2 Determination of color and intensity
4.2.1 Kaolin colorimetry
4.2.1.1 Reagents and instruments
Calcined kaolin: CM-1;
Analytical balance: sensitivity 0.0004g ;
Beaker: 400mL;
Volume flask: 500mL;
Graduated pipette: 15mL;
Porcelain evaporation IIIl: 75mL;
HG2083-91
Glass plate: 120mmX120mm×3mm, colorless and transparent. 4.2.1.2 Analysis steps
Weigh 1.000g (accurate to 0.001g) of dye standard sample and test sample respectively, place them in 400mL beakers, add 200250mL hot distilled water (75-80℃), keep warm at 80℃ and stir thoroughly until completely dissolved, cool to room temperature, transfer the solution into 500mL volumetric flasks respectively, dilute to the scale with distilled water, shake well, and set aside. In a porcelain evaporating dish, add kaolin, standard dye solution or sample dye solution and distilled water according to the formula in Table 2, and then use two glass rods to carefully mix them into a uniform paste for use. Table 2
Porcelain evaporating dish number
Paste composition
Kaolin
1g/500mL standard dye solution, mL
1g/500mL sample dye solution, mL
Distilled water, mL
Total volume of dye solution, mL
Dip the above paste with a glass rod and place them on a glass plate as shown in Figure 1, place a piece of white paper under the glass plate, and then cover the paste with another glass plate, and gently squeeze until the edges of the standard paste and the sample paste are evenly matched (as shown in Figure 2). 2
4.2.1.3 Evaluation
HG2083--91
Figure 1 Position of standard sample and sample paste
Figure 2 Evenly matched edges of standard sample and sample paste after extrusion Visually evaluate the color light and intensity of basic brilliant violet 3B. When evaluating, the color light difference is defined as: approximate, slight, slightly, relatively and significantly relatively. Approximate: There is no difference in the visual observation of the standard sample and the sample when the positions are reversed. Slight: There seems to be a color difference when the standard sample and the sample are reversed. Slight: The color difference is easy to distinguish when the standard sample and the sample are reversed. Relatively: There is a significant color difference when the standard sample and the sample are reversed. Relatively: The standard sample and the sample are basically two different hues when the positions are reversed. When evaluating the color light, the evaluation can only be carried out when the intensity of the standard sample and the sample is close. When evaluating the intensity, the color light of the sample should be equivalent to the standard sample within "similar", "slight" or "slight" to evaluate its intensity. If the color light of the sample is evaluated as "relatively" or "significantly relatively", no intensity evaluation is performed. HG2083-91
When visually evaluating the intensity of the dye, the allowable error should not exceed 3 points. However, when the inspection department of the manufacturer inspects the intensity of the dye product, it must visually measure 100~103 points to be qualified. 4.2.2 Acrylic dyeing method
4.2.2.1 Reagents, materials and instruments
The reagents and materials used shall comply with the relevant provisions of GB2374. The acrylic yarn for dyeing weighs 2g; anhydrous sodium sulfate (GB9853) solution: chemically pure, 10% (m/m) solution; glacial acetic acid (GB676) solution: chemically pure, 1% (V/V) solution; glycerol (GB607): chemically pure; glacial acetic acid-glycerol solution: 7+3;
leveling agent 1227: industrial product, 1% (V/V) solution; detergent JU;
graduated pipette: 20mL,
high temperature and high pressure dyeing machine.
4.2.2.2 dyeing depth 0.4%.
4.2.2.3 Determination steps
Weigh 0.5000g (accurate to 0.0004g) of the dye standard sample and test sample, mix into a slurry with 5mL of glacial acetic acid-glycerol solution, then add 200mL of 70-80℃ hot distilled water, keep this temperature and stir thoroughly, after it is completely dissolved, cool to room temperature, then transfer to a 1000mL volumetric flask, dilute to the scale with distilled water for use (use as soon as it is prepared). 4.2.2.4 Preparation of dye solution
Prepare the dye solution according to Table 3, with a bath ratio of 1:100. Table 3
Dyeing vat number
Dye bath components
0.5g/L standard dye solution
0.5g/L sample dye solution
Anhydrous sodium sulfate solution
Glacial acetic acid solution
Leveling agent 1227 solution
Distilled water
Total volume
4.2.2.5 Dyeing operation
Treat the acrylic bulked yarn with detergent JU according to Article 2.4 of GB2399, then hang it on the dyeing hook and dye it at room temperature. Move the dyeing vat into the high temperature and high pressure dyeing machine, cover it (no need to pressurize) and dye it. Heat up under automatic stirring, raise the temperature to 100℃ within 30min, keep the temperature for dyeing for 20min, then cool down to 60℃, take out the dyed sample, wash it with clean water, wring it dry and arrange the dyed sample, make the dyed sample loose, dry it at 60℃, take it out, and wait for the dyed sample to cool to room temperature before evaluating the color and intensity. 4.3 Determination of water insoluble content
Carry out in accordance with GB2381. Hot distilled water is 75～80℃, and the sample dissolution temperature is 75～80℃. 4.4 Determination of moisture
Carry out in accordance with GB2386, and the drying temperature is 60～70℃. 4
5 Inspection rules
5.13.1 and 3.2 are both factory inspection items. HG2083—91
5.2 Basic Brilliant Purple 3B shall be inspected by the quality supervision and inspection department of the manufacturer. The manufacturer shall ensure that the quality of all basic brilliant purple 3B shipped out of the factory meets the requirements of this standard. Each batch of basic brilliant purple 3B shipped out of the factory shall be accompanied by a quality certificate in a certain format. 5.3 The user has the right to inspect the received products in accordance with the provisions of this standard to verify whether their indicators meet the requirements of this standard.
Take the uniform products mixed once as a batch, select 10% of the barrels from each batch of products for sampling, and the number of barrels for sampling of small batches of products shall not be less than 3 barrels.
When sampling, impurities and dust on the barrel cover must be carefully removed, and foreign impurities should not fall into the product. Use a sampler to take samples from the upper, middle and lower parts respectively. After mixing evenly, take about 200 of it and put it into two clean and dry brown bottles with ground mouths. Seal the bottle mouths with paraffin wax and affix labels with the manufacturer's name, product name, batch number and sampling date. One bottle is for inspection and the other is kept for future reference. 5.5 If any of the inspection results do not meet the requirements of this standard, re-sampling and re-inspection should be carried out. If the results still do not meet the requirements of this standard, the entire batch of basic brilliant violet 3B cannot be accepted.
5.6 When the supply and demand parties have objections to the product quality, they can resolve the dispute through negotiation. When arbitration is required, the arbitration method shall be carried out in accordance with the provisions of this standard. Among them, the arbitration method for color light intensity shall be carried out according to the acrylic dyeing method. 6 Marking, packaging, transportation, purchase and storage
6.1 The finished product packaging barrel should have clear markings, indicating the manufacturer's name, product name, trademark, production date, batch number, specifications, gross weight, net weight, and attach a product quality certificate.
6.2 Basic Brilliant Purple 3B should be stored in a dry and ventilated warehouse. It should be handled with care and fire, sun and rain, and the packaging should not be damaged. Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the technical jurisdiction of the Shenyang Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Qingdao Dyestuff Factory. The main drafters of this standard are Tao Meixin, Wen Huiqiong, Xue Jimin, Wang Xueqin, and Yang Xuedong. 5
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