| Identification | More | [Name]
3,3'-Dihydroxybenzidine | [CAS]
2373-98-0 | [Synonyms]
3,3'-DIHYDROXY-4,4'-DIAMINO-BIPHENYL
3,3'-DIHYDROXYBENZIDINE
4,4'-DIAMINO-3,3'-BIPHENYLDIOL
4,4'-DIAMINO-3,3'-DIHYDROXYBIPHENYL
BENZIDINE-3,3'-DIOL
HAB
1’-biphenyl)-3,3’-diol,4,4’-diamino-(
1’-biphenyl)-4,4’-diamine,3,3’-dihydroxy-(
3,3’-dihydroxy-benzidin
3,3’-dioxybenzidine
3,3’-dwuoksybenzydyna
3,3’-dwuoksybenzydyna(polish)
4,4’-diamino-3’-biphenyldiol
6,6’-diamino-m’-biphenol
Dihydroxybenzidine
2-amino-5-(4-amino-3-hydroxyphenyl)phenol
3,3-DIHYDROXYBENZIDINE 98+%
4,4'-Diamino-3,3'-biphenyldiol
4,4'-Diaminobiphenyl-3,3'-diol
3,3'-Dihydroxybiphenyl-4,4'-diamine | [EINECS(EC#)]
679-800-2 | [Molecular Formula]
C12H12N2O2 | [MDL Number]
MFCD00039149 | [Molecular Weight]
216.24 | [MOL File]
2373-98-0.mol |
| Chemical Properties | Back Directory | [Melting point ]
292 °C | [Boiling point ]
356.65°C (rough estimate) | [density ]
1.1710 (rough estimate) | [refractive index ]
1.6660 (estimate) | [storage temp. ]
Keep in dark place,Inert atmosphere,Room temperature | [Water Solubility ]
Practically insoluble in water | [form ]
powder to crystal | [pka]
9.15±0.10(Predicted) | [color ]
White to Gray to Brown | [CAS DataBase Reference]
2373-98-0(CAS DataBase Reference) | [EPA Substance Registry System]
2373-98-0(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
T | [Risk Statements ]
R40:Limited evidence of a carcinogenic effect. | [Safety Statements ]
S22:Do not breathe dust .
S53:Avoid exposure-obtain special instruction before use . | [RTECS ]
DV4900000 | [HS Code ]
29222990 | [Safety Profile]
Suspected carcinogen
with experimental carcinogenic,
neoplastigenic, and tumorigenic data.
Mutation data reported. When heated to
decomposition it emits toxic fumes of
Nox | [Hazardous Substances Data]
2373-98-0(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
Colorless crystals. | [Reactivity Profile]
3,3'-DIHYDROXYBENZIDINE(2373-98-0) is an aminoalcohol. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides. | [Air & Water Reactions]
Keep well closed. Protect from air and light. | [Health Hazard]
ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits toxic fumes. | [Description]
3,3'-Dihydroxybenzidine is an organic synthesis intermediate used as a raw material for the synthesis of fire-resistant polymers (polyhydroxyamino acids).3,3'-Dihydroxybenzidine is also used in the preparation of hydroxyl-containing polyimides, all of which are synthesised to be soluble in NMP when heated. 3,3'-Dihydroxybenzidine is used in the synthesis of polyimides with hydroxyl groups. The glass transition temperature (Tg) of polyimides ranges from 336-360°C, independent of the structure of the tetracarboxylic dianhydride. The storage modulus of some polyimides does not decrease at elevated temperatures. All polyimides thermally transform into polybenzoxazole when heated to 500°C for 1 hour under vacuum. | [Chemical Properties]
A pale brown solid | [Uses]
4,4'-diaminobiphenyl-3,3'-diol is used as organic intermediates. |
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