91-34-9
91-34-9 structure
- Name: 4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid
- Chemical Name: 5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-2-sulfophenyl]ethenyl]benzenesulfonic acid
- CAS Number: 91-34-9
- Molecular Formula: C26H20N4O8S2
- Molecular Weight: 580.58900
- Create Date: 2016-07-14 22:40:27
- Modify Date: 2024-04-03 14:15:23
| Name | 5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-2-sulfophenyl]ethenyl]benzenesulfonic acid |
|---|---|
| Synonyms |
Direct Yellow 4 dye
Benzenesulfonic acid,2,2'-(1,2-ethenediyl)bis(5-((4-hydroxyphenyl)azo) C.I. DIRECT YELLOW 4 4,4'-Bis-(4-hydroxy-phenylazo)-stilben-2,2'-disulfonsaeure (Stilben-disulfonsaeure-(2.2'))-4.4'-bis-[(azo 4)-phenol] 4,4'-Bis((4-hydroxyphenyl)azo)stilbene-2,2'-disulphonic acid 4,4'-bis-(4-hydroxy-phenylazo)-stilbene-2,2'-disulfonic acid EINECS 202-062-6 Brillantgelb 4,4'-Bis-(4-hydroxy-benzolazo)-stilbendisulfonsaeure-(2,2') |
| Density | 1.5g/cm3 |
|---|---|
| Molecular Formula | C26H20N4O8S2 |
| Molecular Weight | 580.58900 |
| Exact Mass | 580.07200 |
| PSA | 208.42000 |
| LogP | 5.58400 |
| Index of Refraction | 1.691 |