Sulfide Dye

Name:
Sulfide Dye
Detailed information:
(sulfur dye). One of a group of water-insoluble dyes produced by heating various organic compounds with sulfur. The characteristic chromophore groupings are C—S—C and C—S—S—C; CI numbers range from 53,000–54,999. Like vat dyes, sulfide dyes are reduced to a water-soluble, colorless form before application and are then oxidized to their original colored state. Application is usually to cotton from a sodium sulfide bath. Sulfur black (CI 53,185) is an important example.