4-4 Di-Amino Stilbine 2-2 Di-Sulphonic Acid
Para Nitro Toluene Ortho Sulphonic Acid

4-4 Di-Nitro Stilbine 2-2 Di-Sulphonic Acid

4-Amino 4-Nitro Stiblin 2-2 Di Sulphonic Acid


D.N.S.D.A.
4-4 Di-Nitro Stilbene 2-2 Di-Sulphonic Acid

Structural Formula


 1. Name of Product : 4-4 Dintro Stilbene2-2 Disulphonic Acid.
 2. Molecular Weight : 430 (Free Acid)
 3. Emperical Formula : C14H10O10N2S2
 4. Insoluble in Alkali : 0.2 (Maximum)
 5. Form Supply : Semi Dry Crystal Powder
 6. Appearance : Orange -Yellow
 7. Purity : 75 % Min.
 8. Purity by HPLC : 99 %  Min.
 9. Dibenzyl Stilbene : 0.5%
10. Solubility : Soluble in hot water
11. Inorganic Salt :
Chloride : 0.1%
Sulphate : 0.2%
12. Colour Value :
Red  : 7.0 Max.
Yellow  : 40.0 Max.
13. Main Usage : It is a kind of dyes intermediates. Can be used In manufacture of DSD Acid.
14. Packing : HDPE Woven bags or as per the customer's


D.N.S.D.A. 
4-4 Di-Nitro Stilbene 2-2 Di-Sulphonic Acid 

Structural Formula


1. Name of Product : 4-4 Di Nitro Stilbene 2-2 Di Sulphonic Acid 
CAS No. 128-42-7
2. Molecular wt. : 474 (Sodium Salt)
3. Emperical Formula : C14H8O10N2S2Na2
4. Insoluble : Max. 0.1%
5. Form supply : Semi - dried Powder
6. Appearance : Pale Yellow
7. Purity : Min. - 75.0%
8. Dibenzyl Stilbene : Max. - 0.5%
9. Application : Intermediate for Direct Dyes
10. Packing : 25/500 kgs. HDPE bag with separate liner inside.
11. Storage : Inflammable in nature hence should be kept away from excess heat and fireplace
12. Acute and cronitoxi : The product does not appear to cause any hazard by inhalation of dust
13. Handling instruction : Rubber or plastic gloves, apron and boots should be worn together with goggles giving total eye protection


N.A.S.D.A.
4-Amino 4-Nitro Stilbene 2-2 Di Sulphonic Acid

Structural Formula


1. Product : N.A.S.D.A.
2. Emperical Formula : C14H12N2O8S2
3. Molecular Wt. : 400 (Free Acid)
4. Purity : 60.0% min (semi dryed mt.)
5. Contain By TLC : (A) D.N.S.D.A. - 1.0% max
(B) D.A.S.D.A. - 1.0% max
6. Purity By HPTLC : 97%
7. Insoluble : 0.2 % max
8. Solubility : Water Soluble
9. Physical Appearance : Red Colour
10. Packing : 50 Kgs. of H.D.P.E. bag with liner inside.

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