DSD acid 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid CAS No: 81-11-8 EINECS No: 201-325-2 we are manufacturer

DSD ACID

 

1,Chemical name :4,4'–Diaminostilbene–2,2'Disulfonic acid

2,Commodity name : DSD ACID

3,Structural Formula :                        

4,Molecular Formula : C14H14N2O6S2

5,Molecular Weight : 370.4

6,Plysical 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 :

Item	Wet products	Dry products
Appearance	Light yellow press cake	Light yellow powder
Gardner color ≤	10	9
Amino Value ≥	54%	95%
Insolubles ≤	0.05%	0.08%
Benzyl ≤	0.25%	0.25%
Fe (ppm) ≤	50	60

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 .

 

DSD ACID