C.I. Sulphur Blue 12
- CAS NO.：1327-96-4
- Empirical Formula: Unspecified
- Molecular Weight: 0
What is C.I. Sulphur Blue 12?
Preparation
1,2,4-Trichloro-7-amino-3H-isophenoxazin-3-one and Sodium polysulfide ethanol solution heating, and in 80 ~ 81 ℃ under reflux 24 hours, in steamed out after ethanol, add salt precipitation, and washing brine precipitation. This oxazine is by 2,3,5,6-Tetrachlorocyclohexa-2,5 -diene-1,4-dione and 2-Amino-5-nitrophenol?condensation, then in 30 ~ 40 ℃ with Sodium hydroxide powder and insurance and reduction.
Properties and Applications
red light blue.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Fulling | Persperation Fastness | Soaping | |
| Moderate | Severe | ||||||
| ISO | 3-4 | 4 | 4-5 | 3-4 | 2 | ||
Safety information for C.I. Sulphur Blue 12
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