2,2'-Benzidinedisulfonic acid
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2,2'-Benzidinedisulfonic acid ??
- ???
- 175°C
- ?? ?
- 638.25℃[at 101 325 Pa]
- ??
- 1.5417 (rough estimate)
- ???
- 0Pa at 25℃
- ???
- 1.6510 (estimate)
- ?? ??
- Keep in dark place,Inert atmosphere,Room temperature
- ??? ??
- ??
- ?? ?? (pKa)
- -1.85±0.50(Predicted)
- ??
- ??? ???
- ???
- 20°C?? <0.1g/100mL
- LogP
- 1.102 at 24℃
- CAS ??????
- 117-61-3(CAS DataBase Reference)
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- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xi | ||
|---|---|---|---|
| ?? ???? ?? | 20/21/22-37/38-36-36/37/38 | ||
| ????? | 22-26-36-60-37 | ||
| RTECS ?? | DV5230000 | ||
| TSCA | Yes | ||
| HS ?? | 29215900 | ||
| ?? | eye-rbt 500 mg/24H SEV 28ZPAK -,191,72 | ||
| ???? ?? | KE-09710 |
2,2'-Benzidinedisulfonic acid C??? ??, ??, ??
??? ??
PURPLE CRYSTALLINE POWDER??
4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff. Benzidine-2,2' -disulfonic acid is used in the production of yellow and red azo dyes.?? ??
2,2'-Benzidinedisulfonic acid is made from the potassium or sodium salt of 3- nitrobenzenesulfonic acid by a gradual reduction using zinc dust and sodium hydroxide solution in a dilute aqueous solution. The product is subsequently rearranged using hydrochloric acid or dilute sulfuric acid. Electrochemical or catalytic reductions are also possible.?? ??
Leaflets or prisms or light purple powder.??? ?? ??
Insoluble in water.????
Flash point data for 2,2'-Benzidinedisulfonic acid are not available; however, 2,2'-Benzidinedisulfonic acid is probably combustible.Safety Profile
A severe eye irritant. When heated to decomposition it emitsvery toxic fumes of SOx and NOx.2,2'-Benzidinedisulfonic acid ?? ?? ? ???
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?? ??
REACTIVE ORANGE 84
ACID RED 97 (C.I. 22890)
4,4'-??[(2-??-1H-??-3-?)??]-1,1'-???-2,2'-?????????
trisodium 4-[[7-[(2,4-diaminophenyl)azo]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-2,2'-disulphonate
?????56
??????26
4,4'-bis[[2-hydroxy-3-[(phenylamino)carbonyl]-1-naphthyl]azo][1,1'-biphenyl]-2,2'-disulphonic disodium acid
Acid Red 444
Acid Yellow 42
2,2'-Benzidinedisulfonic acid ?? ??
???( 264)?? ??
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|---|---|---|---|---|---|
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2,2'-Benzidinedisulfonic acid ?? ??:
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Sulfurous Acid
IMINOCTADINE TRIS(ALBESILATE)
ACID RED 89
O-TOLUIDINE DISULFONIC ACID
3,3'-DIMETHYL-NAPHTHIDINE-DISULFONIC ACID
Acid Yellow 42
ACID RED 97 (C.I. 22890)
4,4'-DIAMINO-5,5'-DIMETHYL-2,2'-BIPHENYL DISULFONIC ACID DISODIUM SALT
Mordant Yellow 26
Acid Yellow 44
Acid Orange 56
2,2'-Benzidinedisulfonic acid