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Leuco Sulphur Green 7

Name:C.I.Leuco Sulphur Green 7,C.I.53580

Molecular Structure:

C.I.Leuco Sulphur Green 7,C.I.53580,CAS 12262-34-9

C.I.Leuco Sulphur Green 7,C.I.53580,CAS 12262-34-9

CAS Registry Number:12262-34-9

Manufacturing Methods :  5-(4-Hydroxyanilino)-8-(4-methylanilino)-lnaphthalenesulfonic acid in the presence of Copper sulfate monohydrate with Sodium polysulfide ethanol solution heating, reflux 50 hours, then add the Sodium nitrite, again boiling 6 hours, steamed out ethanol, in 50 ~ 60 ℃ blowing air make precipitation. This indophenol is by 8-(P-toluidino)naphthalene-1-sulfonic acid  and where did 4-Aminophenol with Sodium hypochlorite oxidation of mixture, then use Sodium hydrosulfide reduction and have to (BIOS 1155, – 12)

Properties and Applications: green.

Standard Acid Resistance Alkali Resistance Light Fastness Fulling Persperation Fastness Soaping
Moderate Severe
ISO 3 4-5 4 4 2-3

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