Vat Yellow 21
- CAS NO.：1328-40-1
- Molecular Weight: 0
What is Vat Yellow 21?
Preparation
: in the low temperature will be 2-(Chloromethyl)anthracene-9,10-dione?(or its chlorine derivatives) and brimstone heating, Sodium hypochlorite processing and then use the product.
Properties and Applications
yellow. Slightly soluble in dimethyl benzene, not soluble in alcohol. The strong sulfuric acid for dark red light purple, yellow after diluted precipitation; In alkaline insurance powder solution for brown; In the acidic insurance powder solution for bright yellow.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 5 | 5 | 5 | 4-5 | 5 | ||
| AATCC | 5 | 5 | 4 | 4 | |||
Safety information for Vat Yellow 21
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