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
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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