Leuco Sulphur Brown 4
Name:C.I.Leuco Sulphur Brown 4,C.I.53210
Molecular Structure:
C.I.Leuco Sulphur Brown 4,C.I.53210
CAS Registry Number:
Manufacturing Methods : coarse formic acid or m-Cresol and Sodium polysulfide in 270 ~ 275 ℃ calcination, add or do not add Copper sulfate monohydrate all can.
Properties and Applications: brown light olive to yellow brown. Brown hydroscopicity powder. In hydrochloric acid in brown precipitation; In the Sodium hydroxide solution for blue light green.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Fulling | Persperation Fastness | Soaping | |
| Moderate | Severe | ||||||
| ISO | 4 | 3 | 3-4 | 4-5 | 4 | 3-4 | |
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