Dyeing Of Cotton Fabric With Sulpher Dyes  Introduction: Sulpher dyes are complex heterocyclic molecules or mixtures formed by melting or boiling organic compounds containing amino or nitro groups with Na-polysulphide and Sulpher. Sulpher dyes are so called as they all contain Sulpher linkage within their molecules. Sulpher dyes are highly coloured, water insoluble compounds and […]