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Merck
CN

B9750

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:
2421-28-5
Molecular Weight:
322.23
UNSPSC Code:
12162002
NACRES:
NA.23
PubChem Substance ID:
24892154
EC Number:
219-348-1
Beilstein/REAXYS Number:
761777
MDL number:
MFCD00005923

Key Documents

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Product Name

Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 98%

InChI key

VQVIHDPBMFABCQ-UHFFFAOYSA-N

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

SMILES string

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

vapor density

1.4 (vs air)

vapor pressure

<0.1 mmHg ( 0 °C)

assay

98%

form

powder

autoignition temp.

975 °F

expl. lim.

16 %

mp

218-222 °C (lit.)

Quality Level

200

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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.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319,H335

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ8313
MKCZ5449
MKCX3687
0000356116
MKCW3713

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

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