HG/T 2992-198297 Direct Copper Salt Blue 2R (original GB/T 1649-1982) HG/T2992-198297 standard download decompression password: www.bzxz.net

UDC667.21:661.856.23
National Standard of the People's Republic of China
GB 1649—82
Direct copper
Direct copperblue2R
Published on 1982-12-29
Approved by the State Bureau of Standards
Implemented on 1983-10-01
National Standard of the People's Republic of China
Direct copper salt
Directcopperblue2R
UDC 667.21 : 661
.856.23
GB 1649—82
Substitute GB1649—79
The product obtained by coupling 1 molecule of dianisidine dinitrogen compound with 1 molecule of J acid and 1 molecule of 1-naphthol-4-sulfonic acid in alkaline medium is called direct copper salt blue 2R. It is mainly used for dyeing cotton textiles. Structural formula:
Empirical formula: Ca/H25N.O10S2Na2
Molecular weight: 773.7 (according to the international atomic weight in 1979) Technical requirements
The main quality indicators of direct copper salt blue 2R should meet the requirements of Table 1. Table 1
Strength, points
Dyeing fastness on cotton fabric
Content of impurities insoluble in water, %
Moisture content, %
Ultra-black uniform powderbzxz.net
100±3 of the standard sample
Similar to the standard sample
Meet the requirements of Article 1.3 of this standard
Fineness (content of residue passing 80 mesh/inch sieve), %5
1.2 According to the method specified in HGB2141-61 "Spectral Analysis Method for Dyes", the solution containing 2 mg of dye in 100 ml of distilled water is determined, and the solution layer thickness is 10.00 The spectral curve at millimeters is shown in Table 2 and the figure: Table 2
Wavelength, nanometers
Optical density D
Wavelength 2, nanometers
Optical density D
National Bureau of Standards Issued on December 29, 1982
Implementation on October 1, 1983
GB1649—82
Wavelength input, nanometers
2Maximum = 560 nanometers
Allowable error is ±10 nanometers
Allowable error of dye concentration is ±1%
The dyeing fastness of direct copper salt blue 2R standard sample on cotton fabric shall comply with the provisions of Table 3. Table 3
2 Test method
2.1 Identification of dyeing strength and shade:
95℃ soap washing
2.1.1 The specifications and concentrations of the reagents used in dyeing, the preparation of the dye solution, the specifications of the fibers and the general conditions for dyeing shall all be in accordance with the provisions of GB2374-80 "General Conditions for Dyeing Determination of Dyes". 2.1.2 The dyeing depth is 0.5%, and 10 grams of cotton yarn or cotton cloth (mainly cotton yarn) is used for dyeing. 2.1.3 Preparation of dye liquor: in accordance with the provisions of Article 2 of GB2375-80 "Determination of Dyeing Shade and Intensity of Direct Dyes". In 4 500 ml dye vats, prepare the dye liquor according to the provisions of Table 4. Table 4
Test solution with a concentration of 0.5 g/500 ml, ml Standard sample solution with a concentration of 0.5 g/500 ml, ml 5% sodium carbonate solution, ml
10% sodium sulfate solution, ml
Bath ratio: 1:20 for cotton yarn; 1:40 for cotton cloth. GB1649-82
2.1.4 Dyeing operation: According to the provisions of Article 4 of GB2375-80 (the amount of copper sulfate and acetic acid is stipulated to be 1.5%). The dyeing temperature is 90-95℃.
2.2 Determination of dyeing fastness on cotton fabrics: According to the provisions of GB413-419-78 "Test method for dyeing fastness of printed and dyed fabrics".
2.3 Determination of the content of impurities insoluble in water: According to the provisions of Article 1 of GB2381-80 "Determination of the content of insoluble matter in dyes".
2.4 Determination of moisture content: According to the provisions of Article 2 of GB2386-80 "Determination of moisture content in dyes and dye intermediates", but the drying temperature is stipulated to be 100-105℃.
2.5 Determination of fineness: According to the provisions of GB2383-80 "Determination of sieve fineness of dyes". The specification of the standard sieve used is 80 mesh/inch.
3 Inspection rules
3.1 Direct copper salt blue 2R should be inspected by the technical inspection department of the manufacturer. The manufacturer shall ensure that all direct copper salt blue 2R shipped from the factory meet the requirements of this standard. Each batch of direct copper salt blue 2R shipped from the factory shall be accompanied by a quality certificate in a certain format. 3.2 The user has the right to verify the direct copper salt blue 2R received in accordance with the provisions of this standard to verify whether it meets the requirements of this standard.
3.3 Sampling method
3.3.1 Select 10% of the barrels from each batch (one batch is uniform products) for sampling. The number of barrels for sampling small batches shall not be less than 3 barrels. Dust and impurities on the barrel cover must be carefully removed, and impurities should not fall into the product when the cover is opened. 3.3.2 Use a probe to take samples from the upper, middle and lower parts of the opened barrel, and take a 10-15 cm high sample from the lower end of the probe each time.
3.3.3 After carefully mixing the sample, take about 200 grams of the sample and divide it into two clean, dry, brown wide-mouth bottles with ground stoppers, and seal them with paraffin. Stick labels on the bottles, indicating: manufacturer name, product name, batch number and sampling date. The wide-mouth bottles must be sealed, one bottle is handed over to the inspection department for inspection at the time, and the other bottle is kept for reference. 3.3.4 If one of the indicators in the test results does not meet the requirements of this standard, a sample should be selected from the double amount of packaging for re-testing. If only one indicator in the re-test results does not meet the requirements of this standard, the entire batch of direct copper salt blue 2R cannot be accepted. 3.3.5 When the supply and demand parties have disputes over product quality and need arbitration, the arbitration institution can be selected by both parties by agreement. During arbitration, arbitration analysis shall be conducted in accordance with the inspection methods specified in this standard. 4 Packaging, marking, storage and transportation
4.1 Direct copper salt blue 2R is packed in iron barrels and sealed. The weight of each barrel is 25 kg or 50 kg. Other packaging can be negotiated with the user.
4.2 The packaging container should be painted with a firm mark, which includes: manufacturer name, trademark, product name, production date, batch number, net weight, "qualified" and this standard number. 4.3 The dye should be stored in a dry and ventilated place and avoid sunlight; it should be handled with care to prevent heat and moisture. Additional Notes:
This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the technical jurisdiction of Shenyang Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Changzhou Dye Factory. This standard was first issued in 1979.
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