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.
(c)2003
Hebei Hengshui Donggang Chemical Co., Ltd.
Add:East Daqing road Hengshui in China 053000 Tel:+86-318-2127902
Fax:+86-318-2172108
E-mail:donggang@hsdonggang.com
1.Chemical name:4,4'-Diaminostilbene-2,2'-disulfonic
acid 