ChemNet > CAS > 91-34-9 4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid
91-34-9 4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid
| product Name |
4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid |
| CAS No |
91-34-9 |
| Synonyms |
Direct Yellow 4 dye; 5-(4-hydroxyphenyl)azo-2-[(E)-2-[4-(4-hydroxyphenyl)azo-2-sulfo-phenyl]vinyl]benzenesulfonic acid |
| Molecular Formula |
C26H20N4O8S2 |
| Molecular Weight |
580.589 |
| InChI |
InChI=1/C26H20N4O8S2/c31-23-11-7-19(8-12-23)27-29-21-5-3-17(25(15-21)39(33,34)35)1-2-18-4-6-22(16-26(18)40(36,37)38)30-28-20-9-13-24(32)14-10-20/h1-16,31-32H,(H,33,34,35)(H,36,37,38)/b2-1+,29-27u,30-28u |
| EINECS |
202-062-6 |
| Molecular Structure |
![91-34-9 4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid](https://images-a.chemnet.com/suppliers/chembase/cas5/cas91-34-9.gif)
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| Density |
1.5g/cm3 |
| Refractive index |
1.691 |
| Hazard Symbols |
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| Risk Codes |
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| Safety Description |
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