Chemical name:
CAS No.: 81-11-8
Content: 95%


Product name: DASDA

Chemical name: 4,4′-Diamino-2,2′-stilbenedisulfonic acid; DSD Acid;

CAS: 81-11-8

Synonys: DSD Acid

MW: 370.4

MF: C14H14N2O6S2

Use: It is mainly used as intermediate of dyes.

Package: 25kg plastic woven bag

Origin: Made In China

Remarks: We have been one of the main manufacturer and exporter of DSD acid from China.

Specifications of DASDA:


Items Standards Results
Appearance White powder comply
Content 95% 95.6%
Moisture 0.5% 0.35%
Ash 0.5% 0.38%
pH 5-8 6

Introduction of DASDA:

Producers are mainly concentrated in China and India.
Yellow needle like hygroscopic crystal. Very slightly soluble in water, soluble in ethanol and ether, easily soluble in alkali solution. Use: it is used to produce fluorescent brightener, direct frozen yellow G and direct yellow R, and it is also used as intermediate of pesticide use dye, fluorescent brightener, etc.
A Chinese factory withdrew from production after an explosion in Xiangshui Tianjiayi, China. The company previously had a market share of about 17%. The price of the product has soared since then. Until the outbreak of the novel Coronavirus, worldwide demand weakened and prices fell sharply.