| Identification | More | [Name]
2,2'-Benzidinedisulfonic acid | [CAS]
117-61-3 | [Synonyms]
2,2'-BENZIDINEDISULFONIC ACID
2,2'-Disulfo-4,4'-diaminobiphenyl
2,2'-disulfobenzidine
2,2'-DISULFONIC ACID BENZIDINE
4,4'-Diamino-(1,1'-biphenyl)-2,2'-disulfonic acid
4,4'-DIAMINO-2,2'-BIPHENYLDISULFONIC ACID
4,4'-Diaminobiphenyl-2,2'-disulfonic acid
6,6'-bimetanilic acid
BDSA
BENZIDINE 2,2 DISULFONIC ACID
benzidine-2,2'-disulphonic acid
1’-biphenyl)-2,2’-disulfonicacid,4,4’-diamino-(
1’-biphenyl]-2,2’-disulfonicacid,4,4’-diamino-[
1’-Biphenyl]-2,2’-disulfonicacid,4,4’-diamino-[1
2,2’-diamino-4’-biphenyldisulfonicacid
2,2’-disulfo-benzidin
4,4’-diamino-2’-biphenyldisulfonicacid
4,4’-diaminodiphenyl-2,2’-disulfonicacid
kyselinabenzidin-2,2’-disulfonova
2,2'-disulfo-4,4'diaminobibenzene | [EINECS(EC#)]
204-200-0 | [Molecular Formula]
C12H12N2O6S2 | [MDL Number]
MFCD00041885 | [Molecular Weight]
344.36 | [MOL File]
117-61-3.mol |
| Chemical Properties | Back Directory | [Appearance]
PURPLE CRYSTALLINE POWDER | [Melting point ]
175°C | [Boiling point ]
638.25°C[at 101 325 Pa] | [density ]
1.5417 (rough estimate) | [vapor pressure ]
0Pa@25°C | [refractive index ]
1.6510 (estimate) | [storage temp. ]
Keep in dark place,Inert atmosphere,Room temperature | [solubility ]
1.033g/L[in organic solvents at 20 °C] | [form ]
Powder | [pka]
-1.85±0.50(Predicted) | [color ]
Dark purple | [Water Solubility ]
<0.1 g/100 mL at 20 ºC | [LogP]
1.102 at 24℃ | [CAS DataBase Reference]
117-61-3(CAS DataBase Reference) | [EPA Substance Registry System]
117-61-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R37/38:Irritating to respiratory system and skin .
R36:Irritating to the eyes. | [Safety Statements ]
S22:Do not breathe dust .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RTECS ]
DV5230000 | [TSCA ]
Yes | [HS Code ]
29215900 | [Toxicity]
eye-rbt 500 mg/24H SEV 28ZPAK -,191,72 |
| Hazard Information | Back Directory | [General Description]
Leaflets or prisms or light purple powder. | [Air & Water Reactions]
Insoluble in water. | [Fire Hazard]
Flash point data for this chemical are not available; however, BENZIDINE-2,2'-DISULFONIC ACID is probably combustible. | [Chemical Properties]
PURPLE CRYSTALLINE POWDER | [Uses]
4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff. | [Production Methods]
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.
| [Flammability and Explosibility]
Nonflammable(100%) | [Safety Profile]
A severe eye irritant. When heated to decomposition it emitsvery toxic fumes of SOx and NOx. |
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