DSD acid

CAS No.: [81-11-8]
Chemical name: 4,4'-Diaminostilbene-2,2'-disulfonic acid
Molecular formula: C14H14N2O6S2
Molecular weight: 370.4


Appearance: pale yellow powder
Total amine value: 95% min.
Benzyl value: 0.25% max.
Alkaline insolubles: 0.10% max.
Color (Gardner): 9 max.
Water: 1.5% max.

Packing: 25 kg bag
Used to produce optical brightener, and direct yellow R, etc.
Molecular structure: