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Sulphur Brown 7

Name:C.I.Sulphur Brown 7,C.I.53275

Molecular Structure:

C.I.Sulphur Brown 7,C.I.53275,CAS 1327-10-2,Kayakai Homodye Brown TF-S

C.I.Sulphur Brown 7,C.I.53275,CAS 1327-10-2,Kayakai Homodye Brown TF-S

CAS Registry Number:1327-10-2

Manufacturing Methods : 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

List of Suppliers:

Kayakai Homodye Brown TF-S( Nippon Kayak u Co Ltd )


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