DSD ACID

1、Chemical name ∶ 4,4'–Diaminostilbene?,2'–Disulfonic acid

2、Commodity name ∶ DSD ACID

3、Structural Formula ∶

4、Molecular Formula ∶ C14H14N2O6S2

5、Molecular Weight ∶ 370.4

6、Physical and chemical properties ∶

(a)Light yellow paste or powder ， soluble in alcohol and either ．

Insoluble in water ， readily soluble in alkali ．

(b)Easy to be oxidized red in air ． There is similar properties with aromatic acid and aromatic amine ．

7、Specifications ∶

Appearance ∶ Light yellow powder

Amino Value ∶ 95% min ．

Insolubles ∶ 0 ． 1% max ．

Benzyl ∶ 0 ． 25% max ．

Fe ∶ 100ppm max ．

Gardner color ∶ 9 max ．

Remarks ∶ To be manufactured according to customer's specifications ．

8、Uses:

Dyes intermediates to produce Fluorescent whitener ， paper ， direct dyes .Reative dyes and used as insecticide ect ．

9、packing ∶

25kg/450kg/500kg/bag or at customer's option ．