Package: 4,4'-Diamino Stilbene-2,2'-Disulfonic Acid

Uses : Used in manufacture of fluorescent whitening agent. Direct Chrysophenine G. Direct yellow R and used as

Molecular Structure:

Product description: 1.Chemical name:4,4'-Diaminostilbene-2,2'-disulfonic acid 2.Commodity name:DSD Acid 3.Structural Formula: 4.Molecular Formula:C14H14N206S2 5.Molecular Weight:370.4 6.Physical and chemical properties: 1)Light yellow paste or powder, soluble in alcohol and ether ;insoluble in water, easily dissolved in alkaline solution. 2)Easily oxidated to red in air, it has properties of aromatic acid and amine. 7.DSD Acid Specifications: Items Index of quality Appearance Moist Product Dry Product Light yellow paste Light yellow power Total Amino Value(on total paste basis), min. 47% Total Amino Value of Dry product(on total sample basis), min. 95% Benzyl Matter(on basis of 100% DSD acid), max. 0.25 0.25 Matter Insoluble in Alkali (on basis of 100% DSD acid), max. 0.05 0.05 Chromaticity, max. 0.20 0.1 Content of Ash %, max. 2.0 8.DSD Acid Main usage: Used in manufacture of fluorescent whitening agent. Direct Chrysophenine G. Direct yellow R and used as insecticide ect. 9.DSD Acid Packing: For powders: 25kg net poly-woven bags or as the customers requirements. For paste: 40kg net poly-woven bags or as the customers requirements.