Sulphur Brown GS
Sulphur Brown GS Basic information
- Product Name:
- Sulphur Brown GS
- Synonyms:
-
- C.I.53275
- C.I.Sulphur Brown 7
- Sulfur Brown
- Sulphur Brown GS
- Sulphur Brown 7
- C.I.Sulphur Brown 7:C.I.53275
- CAS:
- 1327-10-2
- MW:
- 0
- Mol File:
- Mol File
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Sulphur Brown GS Usage And Synthesis
Preparation
1,8-Dinitronaphthalene with Sodium sulfide solution at 90 ℃ reduction, and and Sodium polysulfide in Copper sulfate monohydrate and Sodium chloride under existing roasting, gradually heating up to 270 ℃ (BIOS 1155, 6)
Properties and Applications
dark red light brown. Red brown powder. In the Sodium sulfide solution for red brown; In acetic acid and metal chromium to become red. In the Sodium hydroxide solution partly dissolved, for yellow brown; In concentrated sulfuric acid to dark brown, dilution with brown precipitation. Used for cotton, hemp, viscose fabric dyeing
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Fulling | Persperation Fastness | Soaping | |
| Moderate | Severe | ||||||
| ISO | 4 | 4 | 5 | 4 | 4 | 3 | |
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