This standard specifies the requirements, sampling, analysis steps, inspection rules, marking, labeling, packaging, transportation and storage of Direct Black L-3BG (Direct Fast Black G, CI Direct Black 19). This product is mainly used for dyeing cotton and viscose fibers; it can also be used for dyeing leather, silk, paper, etc. GB/T 9336-2001 Direct Black L-3BG GB/T9336-2001 Standard download decompression password: www.bzxz.net

ICS87.060.10
National Standard of the People's Republic of China
GB/T9336—2001
Direct Black L-3BG
DirectblackL-3BG
Published on July 13, 2001
General Logistics Department of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implemented on February 1, 2002
GB/T9336—2001
This standard is a revision of the recommended national standard GB/T9336—1988 "Direct Black L-3BG (Direct Fast Black G)". The main differences between this standard and GB/T9336—1988 are: 1. The technical indicators of superior products and the technical indicators of pH value in qualified products have been cancelled. —— The technical indicators of moisture content have been revised. 1. The color fastness to acid and alkali is cancelled, the test temperature of color fastness to washing is adjusted from 60℃ to 40℃, and the color fastness index is revised. This standard will replace GB/T9336-1988 from the date of implementation. This standard is proposed by the State Bureau of Petroleum and Chemical Industry. This standard is under the jurisdiction of the National Technical Committee on Dye Standardization. The drafting units of this standard are: Shenyang Chemical Research Institute, Tianjin Yadong Chemical Dye Factory, Tianjin Jinsheng Dye Chemical Factory. The main drafters of this standard are: Ji Lanqin, Zhang Chaoshui, Liu Bingwen, Gong Yaping, Wang Jingwen. This standard was first issued in 1980 as the standard issued by the Ministry of Chemical Industry HG/2-1391-1980, and was first revised and upgraded to the national standard GB/T9336-1988 in 1988.
This standard is interpreted by the National Technical Committee on Dye Standardization. 1 Scope
National Standard of the People's Republic of China
Direct black L-3BG
Direct black L-3BG
GB/T9336—2001
Replaces GB/T9336—1988
This standard specifies the requirements, sampling, analysis steps, inspection rules, and marking, labeling, packaging, transportation and storage of direct black L-3BG (direct fast black G, CI direct black 19). This product is mainly used for dyeing cotton and viscose fibers; it can also be used for dyeing leather, silk, paper, etc.
Structural formula:
Relative molecular mass: 839.78 (according to the 1997 international relative atomic mass) 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T2374—1994 General conditions for dyeing determination GB/T2375—1980
Method for determination of color and intensity of direct dyes GB/T2381—1994
Method for determination of insoluble matter content in dyes
GB/T2383—1980
GB/T2386—1980
GB/T3920—1997
Dye screening Determination method of fineness
Determination method of moisture content of dyes and dye intermediatesTextile color fastness test Color fastness to rubbing (eqvISo105-x12:1993) GB/T3921.1—1997
Textile color fastness test Color fastness to washing (eqvISO105-c04:1989) GB/T3922—1995Textile color fastness test Color fastness to perspiration (eqvISO105-E04:19 94) GB/T4841.2—1984
Standard depth color chart for navy and black dyes GB/T5713—1997
Color fastness test Color fastness to water (eqvISO105-E01:1994) Textiles
GB/T6152—1997
GB/T6678—1986
GB/T8427—1998
Textiles||t t||Color fastness test Color fastness to hot pressing (egvISO105-X11:1994) General rules for sampling of chemical products
Color fastness test Color fastness to light Xenon arc (eqvISO105-B02:1994) Textiles
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on July 13, 2001 and implemented on February 1, 2002
3 Requirements
3.1 Appearance: Black uniform powder.
Direct Black L-3BG shall meet the requirements of Table 1.
1. Strength (of standard product), %
2. Color (same as standard product)
3. Water-insoluble matter, %
4. Moisture content, %
GB/T9336—2001
Quality requirements for direct black L-3BG
5. Fineness (amount of residue passing through a standard sieve with an aperture of 180μm), %3.3 The color fastness of direct black L-3BG on cotton fabrics shall not be lower than that specified in Table 2. Table 2 Color fastness of direct black L-3BG on cotton fabrics
Dyeing depth
Light fastness (xenon arc)
Perspiration fastness
Discoloration cotton stained with wool
Discoloration cotton stained with wool
Discoloration cotton stained with wool
342-34545233-
1)8% (owf) Equivalent to the standard depth of B/L dyeing. 4 Sampling
Approximately slight
Friction resistance
Hot pressing resistance
200℃
Discoloration 4h
Sampling is done in batches, and the manufacturer takes the products mixed and evenly matched at one time as a batch. The number of sampling barrels for each batch should comply with the provisions of 6.6 in GB/T6678-1986. The packaging of the product must be intact. When sampling, do not allow foreign impurities to fall into the product. Use a probe to sample the upper, middle and lower parts of the sample. The sampling volume must not be less than 200. Mix the samples carefully and pack them in two clean, dry and well-sealed containers. Paste labels on them and indicate: product name, manufacturer name, batch, sampling date and location. One is used for inspection and the other is kept for future reference. 5 Analysis steps
5.1 Evaluation of appearance
Visual evaluation is adopted.
5.2 Determination of dyeing color and intensity
General conditions during dyeing should comply with the relevant provisions of GB/T2374 and GB/T2375. 5.2.1 Preparation of dye bath
The dyeing depth is stipulated to be 1%, 5g cotton yarn (or cotton cloth) is used for dyeing, and the bath ratio is 1:40. Dye solution is prepared according to 2.2.1a) of GB/T2375-1980.
Prepare dye bath in five 300mL dye vats according to Table 3. 2
Dye vat number
Standard solution with a concentration of 0.5g/500mL
Test solution with a concentration of 0.5g/500mL
100g/L anhydrous sodium sulfate solution
50g/L anhydrous sodium carbonate solution
Add distilled water to
5.2.2 Dyeing operation
GB/T9336-2001
Table 3 Preparation of dye bath
Perform according to 2.2 of GB/T2375-1980. 5.2.3 Evaluation of intensity and color light
Perform according to the provisions of Chapter 6 of GB/T2374-1994. 5.3 Determination of water-insoluble content
Perform according to the relevant provisions of GB/T2381. 5.4 Determination of fineness
Perform according to the provisions of GB/T2383.
5.5 Determination of moisture content
Perform according to the provisions of Chapter 2 Drying method of GB/T2386-1980. 5.6 Determination of color fastness on cotton fabrics
All color fastness test specimens are dyed to B/L standard dyeing depth according to the provisions of GB/T4841.2. 5.6.1 Determination of color fastness to rubbing
The determination of color fastness to rubbing shall be carried out in accordance with the provisions of GB/T3920. 5.6.2 Determination of color fastness to washing
The determination of color fastness to washing shall be carried out in accordance with the provisions of GB/T3921.1. 5.6.3 Determination of color fastness to perspiration
The determination of color fastness to perspiration shall be carried out in accordance with the provisions of GB/T3922. 5.6.4 Determination of color fastness to water
The determination of color fastness to water shall be carried out in accordance with the provisions of GB/T5713. 5.6.5 Determination of color fastness to hot pressing
The determination of color fastness to hot pressing shall be carried out in accordance with the provisions of GB/T6152, dry pressing at 200℃ (4h). 5.6.6 Determination of color fastness to lightbzxz.net
The determination of color fastness to light shall be carried out in accordance with the provisions of GB/T8427. 6 Inspection rules
6.1 Inspection classification
3.1 and 3.2 in this standard are factory inspection items, and 3.3 is a periodic inspection item, which is inspected once a year during continuous normal production. 6.2 Factory inspection
Direct black L-3BG should be inspected by the quality inspection department of the manufacturer according to the requirements of this standard. The manufacturer should ensure that all direct black L-3BG products shipped from the factory meet the requirements of this standard. 6.3 Re-inspection
If one of the indicators in the inspection results does not meet the requirements of this standard, samples should be taken from twice the amount of packaging for re-inspection. If the results of the re-inspection show that even if only one indicator does not meet the requirements of this standard, the entire batch of products cannot be accepted. 3
7 Marking, labeling, packaging, transportation and storage 7.1 Marking, labeling
GB/T9336—2001
Each barrel of Direct Black L-3BG should be painted with a firm and clear mark, indicating: product name, specification, registered trademark, net content, manufacturer name, factory address, standard number, batch number, production date. The batch number and production date can also be printed on the label and placed outside the plastic bag in the barrel together with the certificate of product quality inspection. 7.2 Packaging
Direct Black L-3BG is packaged in iron barrels lined with plastic bags, and sealed and sealed. The net content of each barrel is 25kg or 50kg. Other packaging can be negotiated with the user.
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
The product should be stored in a cool, dry and ventilated warehouse.
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