raw materials of Fluorescent brightener Optical Brightening DSD acid

Short Description:

CAS No.:81-11-8

Other Names:DASDA

MF:C14H14N2O6S2

EINECS No.:201-325-2

Purity:95%min

Appearance:LIGHT YELLOW POWDER

Product name:DASDA

Name:4,4′-Diaminostilbene-2,2′diasulfonic acid

Packing:25kg Plastic Woven Bags

Grade:Technical Grade

Color:LIGHT YELLOW POWDER

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Product Detail

Product Tags

DSD acid (4,4′-Diaminostilbene-2,2′diasulfonic acid) is used in the production of fluorescent brightener, direct frozen yellow G and direct yellow R, and as insecticide

Light yellow paste or powder, soluble in ethanol and ether, insoluble in water, easy to dissolve in alkali solution. It is easy to oxidize to red, and it has the properties of aromatic acids and amines

DSD acid Specificaiton:

Appearance	Light yellow powder
Purity(%)	≥95.0
Chromaticity	0.12% Max
Alkali insoluble matter	0.08% Max
Ash	2.2% Max
Benzyl compounds	0.25% Max