DASDA, 81-11-8, DSD Acid, China DASDA Supplier


DASDA

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Product Name: DASDA
Chemical Name: 4,4′-Diamino-2,2′-stilbenedisulfonic acid
Synonyms
: DSD Acid; 4,4′-Diamino-stilbene-2,2′-disulfonic acid
CAS No: 81-11-8
MF: C14H14N2O6S2
MW: 370.4
Category
: Dyes Intermediate
Structure:

Descriptions:

Yellow needle-like hygroscopic crystals. Very soluble in water, soluble in ethanol and ether, soluble in alkaline solution.

Melting point 300 ° C
Storage conditions -20 ° C Freezer
Water solubility <0.1 g / 100 mL at 23 ºC

Use:

Used to produce fluorescent brighteners, direct frozen yellow G and direct yellow R, and used as insecticide.

Inttermediate for Dyes and fluorescent whitening agents.

Storage: Storage should be cool and ventilated, away from heat, fire, to prevent sun exposure, heat is strictly prohibited.
Package: 25kg PP bag for solid powder. 200L or 250KG Drum for Liquid.

Specifications: 

Appearance Yellow needle-like hygroscopic crystals
Content ≥95%
Moisture ≤0.1%
Insoluble ≤0.1%
Melting point n/a
Package 25KG/Bag; 500KG/Bag