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B9750 Aldrich

Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride

98%

Synonym: 4,4′-Carbonyldiphthalic anhydride

  • CAS Number 2421-28-5

  • Empirical Formula (Hill Notation) C17H6O7

  • Molecular Weight 322.23

  •  Beilstein Registry Number 761777

  •  EC Number 219-348-1

  •  MDL number MFCD00005923

  •  PubChem Substance ID 24892154

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Properties

Related Categories Anhydride Monomers, Chemical Synthesis, Development Quantities for Research, Materials Science, Monomers,
vapor density   1.4 (vs air)
vapor pressure   <0.1 mmHg ( 0 °C)
InChI Key   VQVIHDPBMFABCQ-UHFFFAOYSA-N
assay   98%
autoignition temp.   975 °F
expl. lim.   16 %
mp   218-222 °C (lit.)

Description

Packaging

100, 500 g in glass bottle

5 kg in poly drum

Application

Used in the synthesis of polyimides.

General description

Benzophenone-3,3′,4,4′-tetracarboxylic acid is formed by hydrolysis, it can be converted to the dianhydride by treating with Ac2O (molar ratio 4 to 1 of acid).The dianhydride is used to synthesize polyimides, which are highly flexible in nature due to the presence of keto and carbonyl groups in the dianhydride molecule. The keto and carbonyl groups subsequently increase the spacing between the imide rings enhancing the solubility and processibility.

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles
Peer-Reviewed Papers
15

References

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