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Leuco Sulphur Brown 8

Name:C.I.Leuco Sulphur Brown 8,C.I.53020

Molecular Structure:

C.I.Leuco Sulphur Brown 8,C.I.53020

C.I.Leuco Sulphur Brown 8,C.I.53020

CAS Registry Number:

Manufacturing Methods : 1-Methyl-2,4-dinitrobenzene and Sodium polysulfide in 220 ~ 230 ℃ calcination 15 ~ 20 hours, with Sodium hydroxide product processing.

Properties and Applications: brown. Brown powder. In the water partly dissolved, for brown. In the Sodium sulfide solution solubility is good, for yellow to red orange; In concentrated sulfuric acid partly dissolved, for orange brown, dilution have orange brown precipitation. In acetic acid or metal chromium, copper red, dark. In the basic insurance powder solution is almost invariant color; In Sodium hypochlorite solution for light yellow, join concentrated sulfuric acid turn yellow. Used for cotton, hemp, viscose fabric dyeing.

Standard Acid Resistance Alkali Resistance Light Fastness Fulling Persperation Fastness Soaping
Moderate Severe
ISO 3-4 3-4 3-4 5 5 4-5

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