DIRECT BLACK 51
COSMEMASTERS, the first cosmetic ingredient course and community service platform in China, is a gathering place for “ingredient analysis officers”. We are committed to creating a scientific, systematic and professional cosmetic ingredient knowledge system for you, so that you can make less detours on the road of skincare and stand out in the workplace. 6 senior lecturers with backgrounds of top 500 beauty companies and more than 10 years of experience will take you to open a new chapter of cosmetic knowledge!
| COSING Ref No | 33564 |
| INCI name | DIRECT BLACK 51 |
| 标准中文名称 | |
| Japan name | |
| INN name | |
| Ph. Eur. Name | |
| CAS No | 3442-21-5 |
| EC No | 222-351-0 |
| Chem/IUPAC Name / Description | Disodium 5-[[4-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-naphthyl]azo]salicylate (CI 27720) |
| Restriction | II/1266 |
| Function |
HAIR DYEING:
Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, permanent, depending on the length of time the colorant remains on the hair.
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