Leuco Sulphur Brown 8
Leuco Sulphur Brown 8 Basic information
- Product Name:
- Leuco Sulphur Brown 8
- Synonyms:
-
- Leuco Sulphur Brown 8
- C.I.Leuco Sulphur Brown 8:C.I.53020
- MW:
- 0
- Mol File:
- Mol File
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Leuco Sulphur Brown 8 Usage And Synthesis
Preparation
1-Methyl-2,4-dinitrobenzene and Sodium polysulfide in 220 ~ 230 ℃ calcination 15 ~ 20 hours, with Sodium hydroxide product processing.
Properties and Applications
brown. Brown powder. In the water partly dissolved, for brown. In the Sodium sulfide solution solubility is good, for yellow to red orange; In concentrated sulfuric acid partly dissolved, for orange brown, dilution have orange brown precipitation. In acetic acid or metal chromium, copper red, dark. In the basic insurance powder solution is almost invariant color; In Sodium hypochlorite solution for light yellow, join concentrated sulfuric acid turn yellow. Used for cotton, hemp, viscose fabric dyeing.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Fulling | Persperation Fastness | Soaping | |
| Moderate | Severe | ||||||
| ISO | 3-4 | 3-4 | 3-4 | 5 | 5 | 4-5 | |
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Leuco Sulphur Brown 8()Related Product Information
- Formamide, N,N'-1,4-phenylenebis-, reaction products with 4-methyl-1,3-benzenediamine and sulfur, leuco derivs.
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- 2-Naphthalenol, sulfurized, leuco deriv.