DASDA

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.