Name:C.I.Vat Yellow 20,C.I.68420
Molecular Structure: anthraquinones
Molecular Weight: 481.46
CAS Registry Number:4216-01-7
Manufacturing Methods : Phthalic anhydride and Toluene condensed aluminum chloride and sodium hydroxide, closed with fuming sulfuric acid, nitric acid and sulfuric acid nitration, oxidation, with nitrobenzene sulfonic acid, ammonia and Formaldehyde, anthrone, and use of thionyl chloride , and 1-Aminoanthracene-9,10-dione condensation.
Properties and Applications: yellow. Yellow powder. Alkaline also for the red ones, brown, acid also does red orange for. The good affinity of cotton fiber, good levelness, but to dead cotton covering power is poor. Mainly used for cotton disseminated and roll dye, but white sex is very poor, only for light color and white color printing, suitable for cotton direct printing.
|Standard||Ironing Fastness||Chlorine bleach||Light Fastness||Mercerized||Oxygen bleach||Soaping|
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Vat Yellow 4GF