This method is applicable to the determination of the effect of hexavalent chromium salts on the color of dyes in dyeing. This standard is applicable to wool dyeing and specifies another milder test method for evaluating the effect of chromium salt concentration that may be encountered when adjusting the color light of dyeing. GB/T 8443-1998 Textiles Test method for color fastness to metallic chromium salts in dye baths GB/T8443-1998 Standard download decompression password: www.bzxz.net

1CS 59. 080. 30
National Standard of the People's Republic of China
G/T84431998wwW.bzxz.Net
idt IS0 105/201:1993
Textiles-Testing melhod for colour fastness to metalsin the dye-bath;Chromium salls1998-10-20Promulgated
Implemented on 1999-05-01
Promulgated by the State Quality and Technical Supervision
GB/T 8443
This standard is based on GB/T8443-1237, which is revised according to GB/T165/Z011993, which is equivalent to GB/T8443-1237. The revised standard is equivalent to GB/T150105/2011993, which is equivalent to GB/T8443-1587 from the date of implementation. This standard is proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is strictly controlled by the National Chemical Standardization Technical Committee, which was established in 1993 and the Shanghai Institute of Dyestuffs. The main authors of this standard are Xu Sumei and Changliu. This standard was first issued in July.
GR/T8443—1998
ISO former name
ISO (International Organization for Standardization) is an international alliance of national standardization bodies (ISO members). The formulation of international standards is carried out through 15 committees. If each member body is interested in the items established by the technical committee, it has the right to join the committee. Domestic or non-governmental international organizations related to the ISO sector can participate in the work and must work closely with the International Electrotechnical Commission (IEC) in the field of electrotechnical standardization.
The draft international standard adopted by the technical committee should be circulated to all member groups for voting before being approved as an international standard. At least 75% of the member groups vote in favor before it can be published. International Standard ISO1U5/ZU1 is the European Technical Committee ISO/C38 Textile Color Fastness and Dye Test Technical Committee.
The IS005± standard for the period 1973 to 1987 consisted of 13 parts, each of which was designated by a letter (e.g. Part A) and a period of 1 month. Each part contained a series of sections, each of which was designated by a letter and a number (e.g. Section A01). These sections are now republished as separate documents: they are each called a "part", but retain their original name. The complete requirements of this part are given in IS105/A51.
1 Scope
National Standard of the People's Republic of China
TextilesTestin metbhad far colour fatlness to tnelalsin the dye-bath;Chromium This method is applicable to the effect of hexavalent chromium on the color of dyes in the presence of hexavalent chromium salts. GB/T8443-1998 105/01, 1993 19x This method is applicable to dyeing with dyestuffs and specifies another milder test method suitable for evaluating the effect of dyeing with the current burning light on the color of dyes.
2 References
The following standards contain texts that have become standard texts through the use of technical standards: When this standard is issued, the texts shown in this standard are valid. All standard parts will be effective. The parties using this standard should consider the possibility of using the latest version of the following standards. G/T250-1995 Evaluation of the change of the content Color sample + (d/15105/A02:1503 GB/T6151-1997 General rules for color test of oxygen products (eqvIS () 1G5/A0:1994) 3 Principle
Use color scale to evaluate the color difference between the color of the object with and without potassium chromate. 4 Apparatus and test
4.1 A piece of light wool fabric with missing color, of suitable size for dyeing in the test room. 4.2 Liquid for testing the dyeing potential and dyeing release band. 4.3 10R/. Chrome melt (KCr0,) solution: 4.4 For assessing discoloration, use the East Color Chart (see G/T 20) 5 test specimens
E Operation
E.1 Dyeing. Use the standard test method in the dye manual to dye two wool fabrics to the standard depth, with a color ratio of 1:40. 6.2 Method 2. To achieve the final dyeing, add enough potassium alkoxide solution to one of the dye baths to make the amount of potassium alkoxide be 100% of the wool fabric, then raise the two dye baths to a stagnation point, and then rinse the wool for 3 minutes. 6.3 Method 2: For the final dyeing, add enough potassium alkoxide solution in one of the dye baths to make the amount of potassium alkoxide be 100% of the wool fabric, and then rinse the wool for 3 minutes. c.2%. Heat the bath to boiling and dye for 60 ng/min. 5.4 Compare the color of the dye with and without potassium nitrate, and evaluate the color difference with the color sample card. The State Administration of Quality and Technical Supervision approved the test report in 1998-1020 and implemented it on May 1, 1999. The test report includes the following parts: 1) Write the number and year of this standard; 2) Name of the material used: 3) Test method and dyeing depth; 4) Color change. GB/7843—1998
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