Acid Yellow 79 (12220-70-1)

The Acid Yellow 79, with its cas register number 12220-70-1, belongs to the product category of dyes and pigments.

The production method of this chemical: Prepare the material of o-aminophenylsulfonyl chloride, 1-(3-sulfonateylphenyl)-3-methyl-5-aminopyrazole and diol A, and firstly diazotize o-aminophenylsulfonyl chloride, and then couple with 1-(3-sulfonateylphenyl)-3-methyl-5-aminopyrazole; Secondly make coupling product react with diol A to condense, and then get the crude products; Finally, go through the operation of salting out, filtering, drying and smashing to get the products.

As for its usage, it is widely applied in many ways. It could be used in dyeing and printing of wool,  and other blended fabrics; It could also be used in printing of nylon and silk fabrics, with good fastness.