89-32-7 1,2,4,5-Benzenetetracarboxylic anhydride
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cas

89-32-7 1,2,4,5-Benzenetetracarboxylic anhydride

product Name 1,2,4,5-Benzenetetracarboxylic anhydride
Synonyms Pyromellitic dianhydride; 1,2,4,5-Benzenetetracarboxylic dianhydride; benzene-1,2:4,5-tetracarboxylic dianhydride; PMDA; 1H,3H-benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone
Molecular Formula C10H2O6
Molecular Weight 218.1193
CAS Registry Number 89-32-7
EINECS 201-898-9
Molecular Structure 89-32-7 1,2,4,5-Benzenetetracarboxylic anhydride
Density 1.885g/cm3
Melting point 283-287℃
Boiling point 398.6°C at 760 mmHg
Refractive index 1.708
Flash point 183.5°C
Water solubility decomposes
Vapour Pressur 1.45E-06mmHg at 25°C
Hazard Symbols  Xn:Harmful;
Risk Codes R41:;
R42/43:;
Safety Description S22:;
S24:;
S26:;
S37/39:;
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