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Key Documents

B9750

Sigma-Aldrich

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

98%

Synonym(s):

4,4′-Carbonyldiphthalic anhydride

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About This Item

Empirical Formula (Hill Notation):
C17H6O7
CAS Number:
Molecular Weight:
322.23
Beilstein:
761777
EC Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

vapor density

1.4 (vs air)

Quality Level

vapor pressure

<0.1 mmHg ( 0 °C)

Assay

98%

form

powder

autoignition temp.

975 °F

expl. lim.

16 %

mp

218-222 °C (lit.)

SMILES string

O=C1OC(=O)c2cc(ccc12)C(=O)c3ccc4C(=O)OC(=O)c4c3

InChI

1S/C17H6O7/c18-13(7-1-3-9-11(5-7)16(21)23-14(9)19)8-2-4-10-12(6-8)17(22)24-15(10)20/h1-6H

InChI key

VQVIHDPBMFABCQ-UHFFFAOYSA-N

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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.

Application

Used in the synthesis of polyimides.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Armarego WLF and Chai C
Purification of Laboratory Chemicals (2012)

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