C.I. Sulphur Brown 35 (8CI)

The dinitrobenzophenone methyl benzenesulfonic acid sodium salt and sodium polysulfide solution heating.

brown. Soluble in water. In Sodium polysulfide, concentrated sulfuric acid and Sodium hydroxide solution are yellow brown, dilution still for yellow brown.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fulling	Persperation Fastness	Soaping
						Moderate	Severe
ISO	3-4	4-5	3-4	4-5		5	4-5