ChemicalBook CAS DataBase List 2373-98-0

2373-98-0

Name	3,3'-Dihydroxybenzidine
CAS	2373-98-0
EINECS(EC#)	679-800-2
Molecular Formula	C12H12N2O2
MDL Number	MFCD00039149
Molecular Weight	216.24
MOL File	2373-98-0.mol

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&#39-Diamino-3,3&#39-biphenyldiol 4,4'-Diaminobiphenyl-3,3'-diol 3,3'-Dihydroxybiphenyl-4,4'-diamine

Chemical Properties

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
InChI	InChI=1S/C12H12N2O2/c13-9-3-1-7(5-11(9)15)8-2-4-10(14)12(16)6-8/h1-6,15-16H,13-14H2
InChIKey	ZGDMDBHLKNQPSD-UHFFFAOYSA-N
SMILES	C1(C2=CC=C(N)C(O)=C2)=CC=C(N)C(O)=C1
CAS DataBase Reference	2373-98-0(CAS DataBase Reference)
EPA Substance Registry System	2373-98-0(EPA Substance)

Safety Data

Symbol(GHS)	GHS07,GHS08
Signal word	Warning
Hazard statements	H315-H319-H351-H373
Precautionary statements	P201-P202-P260-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P308+P313-P405-P501
Hazard Codes	T
Risk Statements	R40:Limited evidence of a carcinogenic effect. less more
Safety Statements	S22:Do not breathe dust . S53:Avoid exposure-obtain special instruction before use . less more
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 less more
Hazardous Substances Data	2373-98-0(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

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.

Spectrum Detail

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