Sulphur Brown 4
- CAS NO.：1326-90-5
- Molecular Weight: 0
What is Sulphur Brown 4?
Preparation
coarse Cresol 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. There are dark brown in hydrochloric acid precipitation; In concentrated Sodium hydroxide solution for blue light green. Used for cotton, hemp, viscose and vinylon/cotton blended fabric dyeing, and sometimes also used in leather dyeing.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Fulling | Persperation Fastness | Soaping | |
| Moderate | Severe | ||||||
| ISO | 4 | 3 | 3-4 | 4-5 | 4 | 3-4 | |
Safety information for Sulphur Brown 4
New Products
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