Used as azo medium. Mainly used for the preparation of Direct Orange S and Direct Acid-proof Bright Red 4BS.

Appearance: dry gry-white powder,

Content:80%min,

Free Jacid:0.2%(HPLC) max,

Insoluble solid:0.3%max,

Chloride Value:5%max.

Package: 25kgs PE/PP bag

Used as azo medium. Mainly used for the preparation of Direct Orange S and Direct Acid-proof Bright Red 4BS.