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HomeProduct name list3,3'-Dihydroxybenzidine

3,3'-Dihydroxybenzidine

  • CAS NO.:2373-98-0
  • Empirical Formula: C12H12N2O2
  • Molecular Weight: 216.24
  • MDL number: MFCD00039149
  • EINECS: 679-800-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 14:08:57
3,3'-Dihydroxybenzidine Structural

What is 3,3'-Dihydroxybenzidine?

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

The Uses of 3,3'-Dihydroxybenzidine

4,4'-diaminobiphenyl-3,3'-diol is used as organic intermediates.

The Uses of 3,3'-Dihydroxybenzidine

3,3''-Dihydroxybenzidine is used in preparation method of covalent organic framework-based metamaterial for optical device.

General Description

Colorless crystals.

Air & Water Reactions

Keep well closed. Protect from air and light.

Reactivity Profile

3,3'-Dihydroxybenzidine 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.

Health Hazard

ACUTE/CHRONIC HAZARDS: When heated to decomposition 3,3'-Dihydroxybenzidine emits toxic fumes.

Safety Profile

Suspected carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of Nox

Properties of 3,3'-Dihydroxybenzidine

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
pka 9.15±0.10(Predicted)
form  powder to crystal
color  White to Gray to Brown
CAS DataBase Reference 2373-98-0(CAS DataBase Reference)
EPA Substance Registry System 3,3-Dihydroxybenzidine (2373-98-0)

Safety information for 3,3'-Dihydroxybenzidine

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H351:Carcinogenicity
H373:Specific target organ toxicity, repeated exposure
Precautionary Statement Codes P201:Obtain special instructions before use.
P202:Do not handle until all safety precautions have been read and understood.
P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P308+P313:IF exposed or concerned: Get medical advice/attention.
P405:Store locked up.
P501:Dispose of contents/container to..…

Computed Descriptors for 3,3'-Dihydroxybenzidine

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