C.I. Sulphur Blue 7 (1327-57-7)

 C.I. Sulphur Blue 7 (CAS NO.1327-57-7) is also named as  Acco Sulfur Blue 2R-CF ; Acco Sulfur Blue 4R-CF ; Acco Sulfur Blue 6R-CF ; Acco Sulfur Blue B-CF ; Acco Sulfur Blue ; GLP-CF ; Acco Sulfur Blue GLR-CF ; Acco Sulfur Blue R-CF ; Atul Sulfur Navy Blue ; CI 53440 ; Calcogene Blue 2B-CF ; Calcogene Blue 2R-CF ; Calcogene Blue 6R-CF ; Calcogene Navy Blue 2GS-CF ; Dark Blue Z ; Diresul Blue 8RS ; Diresul Blue 9RS ; Diresul Navy Blue GIS ; Eclipse Dark Blue B ; Fenoxyl Blue 9R ; Fenoxyl Blue L ; Fenoxyl Blue LC ; Fenoxyl Blue LCR ; HSDB 5811 ; Immedial Indone RR ; Immedial Indone Violet B ; Katigen Blue BC3R Conc CF ; Katigen Blue BC8R Conc CF ; Katigen Blue BCR Conc CF ; Kayaku Sulphur Indone Violet ; Mitsui Sulphur Blue 3BN ; Mitsui Sulphur Blue 4R ; Mitsui Sulphur Blue RCP ; Mitsui Sulphur Blue TFA ; Mitsui Sulphur Blue TFB . C.I. Sulphur Blue 7 (CAS NO.1327-57-7) is blue-purple powder. It is insoluble in water. When it is soluble in sodium sulfide, solution was green gray. In concentrated sulfuric acid, solution was blue-violet, dark blue precipitate after dilution.