This standard specifies the requirements, sampling, test methods, inspection rules, marking, packaging, transportation and storage requirements for sulfur black S-BR (CI soluble sulfur black 1). This standard applies to sulfide black S-BR prepared by the action of double sulfide black oxidation water-washed filter cake and sodium metabisulfite. This product is mainly used for dyeing cotton textiles and leather.
HG/T 3632-1999 history
1999HG/T 3632-1999 Sulphur Black S-BR(Soluble Sulphur Black BR)