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DSD Acid

DSD Acid
Chemical name: 4,4-Diaminostilbene-2,2-disulfonic acid
Commodity name: DSD Acid

Molecular Formula: C14H14N2O6S2

Molecular Weight: 370.4

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

Specs: appearance: Light yellow paste or powder
    
Total Amido Value : 45% min
    
Total drying Amido Value: 95.0% min
     
Alkali Insolubility(paste): 0.08% max
    
Alkali Insolubility(powder): 0.10% max
    
Benzyl Content: 0.25% max

Main Usage: Used in manufacture of fluorescent whitening agent. Direct chrysophenine G. Direct yellow R and

used asinsect preventive ect

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