Vat Yellow 21
Name:C.I.Vat Yellow 21,C.I.69705
Molecular Structure: anthraquinones
Molecular Formula:
Molecular Weight:
CAS Registry Number:1328-40-1
Manufacturing Methods : : 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 | |||
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