Product description: Sulphur Blue BRN Name:C.I.Sulphur Blue 7,C.I.53440 C.I.Sulphur Blue 7,C.I.53440,CAS 1327-57-7,508 Sulphur Blue BR,Sulphur Blue 2BN,Sulphur Blue BN,Sulphur Blue BRN,Sulphur Blue RN CAS Registry Number:1327-57-7 1.Properties and Applications: red light blue to blue light purple. Royal purple powder. Insoluble in water. In the Sodium sulfide solution solubility is good, for green grey; In concentrated sulfuric acid for blue purple, dilution of dark after precipitation. Dyeing content in alkaline insurance powder for the pale yellow light olive, oxidation, to restore the original colour and lustre. In sodium hypochlorite solution all faded. Mainly used for cotton, hemp, viscose fiber and vinylon/cotton blended fabric dyeing. Also used in cotton direct printing and leather, paper dyeing. Standard Acid Resistance Alkali Resistance Light Fastness Fulling Persperation Fastness Soaping Moderate Severe ISO 4 4-5 4-5 3-4(Alkali) 4-5 4 3 AATCC 5 5 5-6 4 4-5 2.List of Suppliers: 508 Sulphur Blue BR,Sulphur Blue 2BN,Sulphur Blue BN,Sulphur Blue BRN,Sulphur Blue RN AkasulfurNavy 3R Asashio Blue 3B Asashio Blue BB Asashio Blue RC Asashio Blue TFB Atul Sulphur Navy Blue Blue BRN Consulfr Blue L Dycosulphur Blue BN