C.I. Sulphur Black Dyes Granules Powder CAS 1326-82-5 BR

Sulfur Dyes C.I. Sulphur Black 1 CAS 1326-82-5 Sulfur Black BR

Product Name: Sulfur black BR , Sulphur black BR , C.I. Sulphur Black 1.

Molecular formula: C6H4N2O5

Quality standard: GB/T25808-2010

CAS No.:1326-82-5

Application: 

  Sulfur black is insoluble in water and ethanol. It has good solubility in sodium sulfide solution and is green and black. Add sodium hydroxide to sodium sulfide aqueous solution to make the color blue; Add hydrochloric acid until there is green light and black precipitation in sodium sulfide solution; It is partially dissolved in cold concentrated sulfuric acid, heated to dark green light blue, and further heated to black blue; Black blue in 25% fuming sulfuric acid; There is green light and black precipitation after dilution; The dye is yellow olive in alkaline sodium hydrosulfite solution, and can restore its original color after oxidation; It will fade completely in sodium hypochlorite solution, and it will not be affected by adding concentrated sulfuric acid. It is mainly used for dyeing cotton, vinylon / cotton blended fabrics, as well as hemp and viscose fibers. It is also used for dyeing leather and paper etc.

Specification:

Storage: It shall be stored in a cool, dry and ventilated place to prevent moisture and heat. The shelf life is one year.

Package: 25kg plastic bag, 25kg carton box, 25kg drum or Jumbo bag are available.

We can produce according to customer's request for different strength and quality. Please send us your standard strength and we will offer you countertype with best quality. Thanks!