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

ALDRICH/B9750 - 98%

Synonym: 4,4′-Carbonyldiphthalic anhydride

CAS Number: 2421-28-5
Empirical Formula (Hill Notation): C₁₇H₆O₇
Molecular Weight: 322.23
EC Number: 219-348-1
MDL Number: MFCD00005923
Linear Formula: C₁₇H₆O₇
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-B9750-100G	100 g	$55.50 1/EA		Add To Favorites
45-B9750-500G	500 g	$155.00 1/EA		Add To Favorites
45-B9750-5KG	5 kg	$776.00 1/EA		Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

assay	98%
autoignition temp.	975 °F
expl. lim.	16 %
form	powder
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
mp	218-222 °C (lit.)
Quality Level	200
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)

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.
Packaging:	100, 500 g in glass bottle
Packaging:	5 kg in poly drum

Symbol	GHS07
Signal word	Warning
Hazard statements	H319 - H335
Precautionary statements	P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	36/37
Safety Statements	25
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1

Purity	98%
mp	218-222 °C (lit.)
UNSPSC	12162002

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