Commodity name : DSD ACID Chemical name : 4,4'aaDiaminostilbeneaa2,2'aaDisulfonic acid Dyes intermediates Purity :above 95 %
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 ether ,Insoluble in water.
(b)Easy to be oxidized red in air .There is similar properties with aromatic acid and amine .
7,Specifications :
Item | Moist products | Dry products |
Appearance | Light yellow paste | Light yellow powder |
Gardner color ≤ | 10 | 9 |
Total Amino Value≥ | 54% | 95% |
Matter Insolubles≤ | 0.05% | 0.08% |
Benzyl Matter≤ | 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 / Dyes Intermediate
