Sell DSD acid

Description

Chemical name: 4,*-Diaminostilbene*2,*-disulfonic acid
Commodity name: DSD Acid?
Molecular Formula: C*4H*4N2O6S2?
Molecular Weight: **0.4
Physical and chemical properties:?
1) Light yellow paste or powder, soluble in alcohol and ether insoluble in water, readily soluble in a aqueous solution of alkali.?
2) Easy be oxidated to red in air, it has properties of aromatic acid and aromatic amine.?
Specifications:?
1) Appearance: Light yellow powder or paste
2) Total drying Amido Value % ? *5.0
3) Benzyl Content % ? 0.*5
4) Alkali Insolubility % ? 0.1
5) ?OD ? 0.1
6) Ash content % ? 1.5

Main Usage: Used in the manufacture of fluorescent whitening agent?direct dyes?reactive dyes, and used as sect preventive etc
Packing: For powders *5kg net poly-woven bags or as the customers requirements.