Hebei Dongguang Honghao Dyes Chemical Co.,Ltd.

4,4'-Diamino Stilbene-2,2'-Disulfonic Acid,DSD Acid

• Category :

  Dyestuffs and Pigments

• Synonyms :

  2,2'-(1,2-Ethylenediyl)bis(5-aminobenzenesulfonic acid); Amsonic acid;4,4'-Diaminostilbene-2,2'-Disulfonic Acid;2,2'-ethene-1,2-diylbis(5-aminobenzenesulfonic acid);4,4'-Diamino-2,2'-stilbenedisulfonic acid;DSD Acid;

• CAS NO :

  81-11-8

• EC NO :

  201-325-2

• Molecular Formula :

  C₁₄H₁₄N₂O₆S₂

• Molecular Weight :

  370.4008

• Main Specifications :

  81-11-8

• InChI :

  InChI=1/C14H14N2O6S2/c15-11-5-3-9(13(7-11)23(17,18)19)1-2-10-4-6-12(16)8-14(10)24(20,21)22/h1-8H,15-16H2,(H,17,18,19)(H,20,21,22)

• Packing :

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

• 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.

• Uses :

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

• Molecular Structure :