|
 DSD
ACID
1. Chemical name: 4,4'-Diaminostilbene-2,2'-disulfonic
acid
2. Commodity name: DSD Acid
| 3. Structural
Formula: |
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4. Molecular Formula: C14H14N2O6S2
5. Molecular weight: 370.4
6. Physical and chemical properties:
1) Light yellow paste or powder, soluble in alcohol and ether
insoluble in water, readily soluble in aqueous solution of alkali
2) Easy be oxidated to red in air. it has properties of aromatic
acid amd aromatic amine.
Specifications:
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Items
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Index of quality
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Appearance
|
Light yellow paste or power |
| Contents of Amino(on total paste basis) |
45%min |
| Contents of dry products(on total paste basis)
|
95%min |
| Insoluble in Alkali(on total paste basis) |
0.05%max |
| Insoluble in Alkali (on bais of dried sample) |
0.08%max |
| Benzyl value(on basis of total sample) |
0.25%max |
Main usage:
Used in manufacture of fluorescent whitening agent.
Direct Chrysophenine G.
Direct yellow R and used as insect preventive ect.
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.
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