Sulfur dyes are predominantly black, brown, and dark blue.

Like many sulfur dyes, details on the chemical reactions are poorly understood.

Red sulfur dyes are unknown, although a pink or lighter scarlet color is available.

It is used in the production of rubber chemicals, sulfur dyes and other chemical compounds.

'Sulfur dyes' are the most commonly used dyes manufactured for cotton in terms of volume.

Other uses include manufacturing sulfur dyes, insecticides, synthetic rubbers.

Sulfur dyes are two part "developed" dyes used to dye cotton with dark colors.

Sulfur dyes are water insoluble.

The most common example is in applying sulfur dyes and vat dyes; with indigo being a classic case.

It is a chemical intermediate in the production of sulfur dyes, wood preservatives, and some herbicides including dinoseb and dinoterb.

Out of all the sulfur dyes perhaps 50% of production is of the sulfur black color as black is the most popular fabric color.

The forerunner of sulfur dyes is attributed to "Cachou de Laval," which is prepared by treating wood products with sulfide sources.

Due to the highly polluting nature of the dye-bath effluent, sulfur dyes are being slowly phased out in the West but they are used on a large scale in China.

Karl Bauer, the Moscow representative of Sandoz A.G., the Swiss chemical company, told the Plaza meeting about Sandoz's recently approved joint venture to produce sulfur dyes with the Soviet Chemistry Ministry.

It is used as such in some industrial dyeing processes, primarily those involving sulfur dyes and vat dyes, where an otherwise water-insoluble dye can be reduced into a water-soluble alkali metal salt (e.g. indigo dye).

The term "direct dye application" stems from some dyestuff having to be either fermented as in the case of some natural dye or chemically reduced as in the case of synthetic vat and sulfur dyes before being applied.