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1,2,4,5-Benzenetetracarboxylic anhydride

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Origin: China

Cas No: 89-32-7

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
CAS No.:
89-32-7
Other Names:
Pyromellitic Dianhydride
MF:
C10H2O6
EINECS No.:
201-898-9
Place of Origin:
Shanghai, China
Grade Standard:
Agriculture Grade, Food Grade, Industrial Grade, Medicine Grade, Reagent Grade
Purity:
99%min
Appearance:
White Powder
Application:
Medicine
Brand Name:
TERPPON
Model Number:
822
color:
White
Packaging&Delivery
Packaging Details
in 25kg drum
Port
Shanghai
Lead Time:
1 week

Property

CAS No.: 89-32-7 Formula: C10H2O6 Molecular Weight: 218.11900

Description

Pyromellitic dianhydride is an organic compound with the formula C6H2(C2O3)2. It is the double carboxylic acid anhydride that is used in the preparation of polyimide polymers such as Kapton. It is a white solid.
It is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An idealized equation is:

Basic Info

Chemical Name	1,2,4,5-Benzenetetracarboxylic anhydride
Synonyms	1H,3H-Benzo[1,2-c:4,5-c‘]difuran-1,3,5,7-tetrone; benzene-1,2,4,5-tetracarboxylic dianhydride; BDFtetron; Pyromellitic anhydride; Piromellitic dianhydride; PYROMELLITIC DIANHYDRIDE; Pyromellitic dianhyd; pyromelliticacidanhydride; 1,2,4,5-benzenetetracarboxylic dianhydride; pyromellithic dianhydride;
CAS No.	89-32-7
Molecular Formula	C10H2O6
Molecular Weight	218.11900
PSA	94.56000
LogP	-0.50460

Properties

Appearance & Physical State	White powder
Density	1.68
Boiling Point	397-400ºC
Melting Point	283-287ºC
Flash Point	380ºC
Refractive Index	1.708
Water Solubility	decomposes
Stability	Stable under normal temperatures and pressures.
Storage Condition	Store in a cool, dry place. Store in a tightly closed container.

Safety Info

RTECS	DB9300000
Safety Statements	S22-S24-S26-S37/39
HS Code	2917399090
WGK Germany	1
Risk Statements	R41; R42/43
Hazard Codes	Xn
Caution Statement	P261; P280; P284; P304 + P340; P305 + P351 + P338 + P310
Hazard Declaration	H317; H318; H334
Symbol	GHS05, GHS08
Signal Word	Danger

Synthesis Route

2,5-Dimethylterephthalic acid→maleic anhydride+1,2,4,5-Benzenetetracarboxylic anhydride
5,6-Dimethyl-2-benzofuran-1,3-dione→phthalic anhydride+4-Methylphthalic anhydride
pyromellitic acid→1,2,4,5-Benzenetetracarboxylic anhydride

Precursor

1,4-diethyl-2,5-dimethyl-benzene
phenanthrene
tetralin
1,2,4,5-Tetramethylbenzene

Downstream Product

pyrrolo[3,4-f]isoindole-1,3,5,7-tetrone
2,6-bis(hydroxymethyl)pyrrolo[3,4-f]isoindole-1,3,5,7-tetrone
6-(3-hydroxyquinolin-2-yl)cyclopenta[f][2]benzofuran-1,3,5,7-tetrone
dimethyl 2,5-dicarbonochloridoylbenzene-1,4-dicarboxylate

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