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Chemical Industry Standard of the People's Republic of China
HG/T2896—1997
Suiphur Navy Blue 3RB (Sulphur Blue BRN)
Suiphur Navy Blue 3RB (Sulphur Blue BRN)1997-04-22 Issued
Ministry of Chemical Industry of the People's Republic of China
1997-10-01 Implementation
W.bzsoso.cOIHG/T2896—1997
This standard is revised on the basis of the original standard GB/T1656-82, and the technical content is basically the same. As the original standard is old, its writing format, expression rules and other contents do not meet the requirements of GB/T1.1-1993, and it is rewritten according to the requirements of relevant standards. According to GB/T2374-94 "General Conditions for Dyeing Measurement", the amount of cotton cloth (cotton yarn) used for dyeing is 5g. In order to be consistent with this standard, this standard changed the amount of cotton cloth (cotton yarn) to 5g during the revision process, and modified the sample weight and liquid absorption in the preparation of dye solution.
The color fastness test in the original standard is carried out according to the method specified in GB/T413-41978 "Dyeing Fastness Test Method" and its various indicators are determined. In view of the fact that the standard for testing color fastness has been revised, this standard is determined according to the revised current national standard method and its various color fastness indicators are determined.
After revision, this standard is adjusted to an industry standard. Except for color fastness, other items and indicators remain basically unchanged. Through the revision of this standard, the standard is more standardized, which is conducive to implementation and improving product quality. From the date of entry into force of this standard, the original GB/T1656-82 is abolished. 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 managed by the Shenyang Chemical Industry Research Institute of the Ministry of Chemical Industry. This standard was drafted by Shenyang Chemical Research Institute and Bengbu Yongyan Dye Chemical Factory. The main drafters of this standard are Qi Tingting, Wang Jingwen and Zhang Zengfang. This standard was first issued in 1979 and reviewed in 1982. 1
WW.bzsoso.cOmFree download of US standard industry informationICS71.100.01
Record number 432—1997
Chemical Industry Standard of the People's Republic of China
Sulfur Navy Blue 3RB (Sulfur Blue BRN)
Suiphur Navy Blue 3RB (Sulphur Blue BRN) 1 Scope
HG/T2896—1997
This standard specifies the requirements, sampling, test methods, inspection rules, marking, packaging, transportation and storage requirements for sulfur navy blue 3RB.
This standard applies to the sulfide dark blue 3RB product obtained by condensing o-toluidine and p-nitrosophenol, neutralizing, and then reacting with sodium polysulfide and oxidizing. This product is mainly used for dyeing cotton textiles. 2 Reference 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, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T2374-94 General conditions for dyeing determination GB/T2376-80 Determination of color light and intensity of sulphur dyes GB/T2381-94 Determination of insoluble matter in dyes GB/T2382-1995 Determination of free sulphur content in sulphur and sulphur-reducing dyes GB/T2383-80 GB/T2386-80 Determination of sieve fineness of dyes Determination of moisture content in dyes and dye intermediates GB/T3920-83 Test method for colour fastness to rubbing of textiles (eqvISo105-x12:1978) GB/T3921-83 Textiles for washing resistance Test method for color fastness (eqvISO105-C01-C05: 1982) GB/T3922—1995 Test method for color fastness of textiles to perspiration (eqvISO105-E04: 1994) GB/T5713—85 Test method for color fastness of textiles to water immersion (eqvISO105E01: 1982) GB/T6152—85 Test method for color fastness of textiles to heat pressing (ironing) (eqvISO105—X11: 1984) GB/T8427—87
Test method for color fastness of textiles to light—xenon arc (eqvISO105—B021984) 3 Requirements
3.1 Appearance: bluish purple uniform powder.
3.2 Sulfurized dark blue 3RB shall meet the requirements of Table 1. Approved by the Ministry of Chemical Industry of the People's Republic of China on April 22, 1997, and implemented on October 1, 1997
W.bzsoso, con1. Strength, points
3. Content of impurities insoluble in sodium sulfide, %
HG/T2896-1997
Table 1 Technical requirements for sulfur dark blue 3RB
4. Fineness (content of residues passing through a sieve with an aperture of 0.56mm), %5. Moisture content, %
6. Free sulfur content, %
The dyeing fastness of sulfur dark blue 3RB on cotton fabrics should not be lower than that specified in Table 2. Table 2 Color fastness of sulfur dark blue 3RB on cotton fabrics
Note: 3% (oWf) is equivalent to 1/1 standard dyeing depth. 4.
is 100% of the standard
is similar to the standard ~ slightly
200℃
Take samples from 10% bags (or barrels) of each batch of products (uniform products are considered as one batch), and each batch of products shall not be less than 3 bags (or barrels). When sampling, use a probe to take samples including the upper, middle and lower parts. The sampling volume shall not be less than 200g. Mix the obtained samples carefully and put them in two clean and dry brown glass bottles with ground stoppers, and seal them with paraffin. Stick labels on the bottles, indicating: manufacturer name, product name, batch and sampling date, one bottle is used for inspection, and one bottle is kept for reference. 5 Test method
5.1 Determination of appearance
Visual determination is adopted.
5.2 Determination of dyeing shade and intensity
The specifications of the reagents used in dyeing, the preparation of the dye solution, the specifications of the fibers and the general conditions for dyeing shall be in accordance with GB/T2374.
5.2.1 Dyeing depth and fabric treatment
The dyeing depth is specified as 2%. 5g of cotton yarn (or cotton cloth) is used for dyeing. Before dyeing, the weighed cotton yarn (or cotton cloth) is boiled with 0.02g/L penetrant BX (industrial use) for 5 minutes, with a bath ratio of 1:20. After treatment, wash with clean water and then dye. 5.2.2 Preparation of dye bath
Weigh 1g of the test sample and standard sample (accurate to 0.001g), mix with 10mL of 100g/L sodium sulfide (converted to 100%) solution [dye: sodium sulfide (converted to 100%) is 1:1) and 1mL of Turkey red oil (50%) to make a slurry, add 50mL of distilled water, and then heat to make the temperature of the dye solution reach 90-95℃. After keeping warm for 15min, add 300mL of distilled water, stir well, transfer to a 500mL volumetric flask after cooling, and dilute to the scale with distilled water. The dye solution used for each dyeing must be prepared as it is used. 2
W.bzsoso,cOnHG/T2896—1997
Prepare the dye bath in five 500mL dye vats according to the provisions of Table 3. Table 3 Preparation of dye bath
Dye vat code
Standard solution with a concentration of 1g/500mL
Test solution with a concentration of 1g/500mL
100g/L anhydrous sodium sulfate solution
5% sodium carbonate solution
Add distilled water to
Bath ratio: cotton yarn (cotton cloth) is 1:40.
5.2.3 Dyeing operation
After the dyeing solution is prepared, place the dye vat on a water bath to prepare for dyeing. The dyeing temperature is 30-40℃. Stir frequently when dyeing. Raise the temperature to 70-75℃ within 15min, and then stir every 5min. Dye at this temperature for 30min. After dyeing, take out and immediately put into running water. After sufficient water washing, oxidize.
5.2.4 Post-oxidation treatment
Take 8 mL of 5% potassium dichromate solution, add 8 mL of 10% acetic acid solution and dilute to 1000 mL with steamed water (bath ratio 1:40) to prepare oxidant solution.
Heat the oxidant solution to 50°C, then treat the dyed sample after washing with clean water for 15 minutes, take it out and wash it thoroughly with clean water and dry it.
5.3 Evaluation of intensity and color light
Perform according to Article 6 of GB/T2374.
5.4 Determination of color fastness
Color fastness to rubbing shall be carried out in accordance with the provisions of GB/T3920. Color fastness to washing shall be carried out in accordance with the provisions of test solution 1 and method 4 in GB/T3921. Color fastness to perspiration shall be carried out in accordance with the provisions of GB/T3922. Color fastness to water immersion shall be carried out in accordance with the provisions of GB/T5713. Color fastness to ironing shall be carried out in accordance with the provisions of GB/T6152, dry pressing at 200℃. Color fastness to light shall be carried out in accordance with the provisions of GB/T8427. 5.5 The determination of the content of impurities insoluble in sodium sulfide solution shall be carried out in accordance with the provisions of 5.1.2 of GB/T2381. 5.6 The determination of free sulfur content
shall be carried out in accordance with the provisions of GB/T2382.
5.7 The determination of moisture content
shall be carried out in accordance with the provisions of Article 1 of GB/T2386. 5.8 Determination of fineness
According to GB/T2383, the standard sieve aperture used is 0.56mm. 6 Inspection rules
6.1 Inspection classification
W.bzsoso,cOnHG/T2896-1997
All items specified in Table 1 are type inspection items, of which 1 to 5 are factory inspection items, and Item 6 and Table 2 are regular inspection items, which are inspected once a year.
6.2 Factory inspection
Vulcanized dark blue 3RB should be inspected by the inspection department of the manufacturer in accordance with the requirements of this standard. The manufacturer should ensure that all shipped sulfide dark blue 3RB products meet the requirements of this standard, and each batch of sulfide dark blue 3RB shipped should be accompanied by a quality certificate in a certain format. 6.3 Re-test
If one of the indicators in the test results does not meet the requirements of this standard, samples should be taken from twice the amount of packaging for re-testing. If only one indicator does not meet the requirements of this standard, the entire batch of products cannot be accepted. 6.4 User Acceptance
The user has the right to test whether the received Sulfur Blue 3RB meets the requirements of this standard in accordance with the provisions of this standard. 7 Marking, packaging, transportation and purchase and storage
7.1 Marking
The outer packaging of Sulfur Blue 3RB should be painted with a firm mark, indicating: manufacturer name, product name, registered trademark, product grade, batch number, production date and net weight, and attached with a product quality certificate. 7.2 Packagingwww.bzxz.net
Sulfur Blue 3RB is packaged in iron drums lined with plastic bags, and the net weight of each bag (or drum) is 25kg or 50kg. Each batch of packaged products should be accompanied by a quality certificate. The certificate shall include: manufacturer name, product name, grade, batch number, production date, factory date, product net weight, certification that product quality complies with the requirements of this standard and this standard number. 7.3 Transportation
Avoid strong vibration during transportation, and be careful when handling; prevent fire, sun and rain. Do not damage the packaging. 7.4 Storage
Products should be stored in a cool, dry and ventilated warehouse. 4
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