Sulphur Brown GS Chemische Eigenschaften,Einsatz,Produktion Methoden
synthetische
1,8-Dinitronaphthalene with Sodium sulfide solution at 90 ℃ reduction, and and Sodium polysulfide in Copper sulfate monohydrate and Sodium chloride under existing roasting, gradually heating up to 270 ℃ (BIOS 1155, 6)
Properties and Applications
dark red light brown. Red brown powder. In the Sodium sulfide solution for red brown; In acetic acid and metal chromium to become red. In the Sodium hydroxide solution partly dissolved, for yellow brown; In concentrated sulfuric acid to dark brown, dilution with brown precipitation. Used for cotton, hemp, viscose fabric dyeing
Standard
Acid Resistance
Alkali Resistance
Light Fastness
Fulling
Persperation Fastness
Soaping
Moderate
Severe
ISO
4
4
5
4
4
3
Sulphur Brown GS Upstream-Materialien And Downstream Produkte
