Pyromellitic dianhydride

Formula: C₁₀H₂O₆
Molecular weight: 218.1193
IUPAC Standard InChI: InChI=1S/C10H2O6/c11-7-3-1-4-6(10(14)16-8(4)12)2-5(3)9(13)15-7/h1-2H
IUPAC Standard InChIKey: ANSXAPJVJOKRDJ-UHFFFAOYSA-N
CAS Registry Number: 89-32-7
Chemical structure:
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Other names: 1,2,4,5-Benzenetetracarboxylic anhydride; 1,2,4,5-Benzenetetracarboxylic dianhydride; 1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone; Benzene-1,2:4,5-tetracarboxylic dianhydride; Pyromellitic acid anhydride; Pyromellitic acid dianhydride; Pyromellitic anhydride; 1,2,4,5-Benzenetetracarboxylic 1,2:4,5-dianhydride; NSC 4798; Pyromellitic 1,2:4,5-dianhydride
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Condensed phase thermochemistry data

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Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_solid	-953.5	kJ/mol	Ccb	Karyakin, Bazhan, et al., 1977	ALS
Δ_fH°_solid	-1047.	kJ/mol	Ccb	Baroody and Carpenter, 1972	High level of uncertainty in the data; ALS
Δ_fH°_solid	-907.34	kJ/mol	Ccb	Mullayanov, Mukhutdinov, et al., 1967	ALS
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_solid	-3267. ± 1.	kJ/mol	Ccb	Karyakin, Bazhan, et al., 1977	Corresponding Δ_fHº_solid = -953.5 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δ_cH°_solid	-3312.7 ± 9.1	kJ/mol	Ccb	Mullayanov, Mukhutdinov, et al., 1967	Corresponding Δ_fHº_solid = -908.22 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity	Value	Units	Method	Reference	Comment
S°_{solid,1 bar}	237.1	J/mol*K	N/A	Dunn, Rahman, et al., 1978	DH
S°_{solid,1 bar}	236.5	J/mol*K	N/A	Karyakin, Mochalov, et al., 1973	DH
S°_{solid,1 bar}	242.1	J/mol*K	N/A	Karyakin, Bazhan, et al., 1977, 2	DH

Constant pressure heat capacity of solid

C_p,solid (J/mol*K)	Temperature (K)	Reference	Comment
215.7	298.15	Dunn, Rahman, et al., 1978	T = 5 to 300 K.; DH
231.4	298.15	Marchidan and Ciopec, 1978	T = 298 to 580 K.; DH
219.9	300.	Karyakin, Bazhan, et al., 1977, 2	T = 60 to 400 K.; DH
219.9	300.	Karyakin, Mochalov, et al., 1973	T = 20 to 300 K.; DH

References

Go To: Top, Condensed phase thermochemistry data, Notes

Karyakin, Bazhan, et al., 1977
Karyakin, N.V.; Bazhan, N.G.; Sapozhnikov, V.N.; Shvetsova, K.G.; Berestneva, G.L.; Lomteva, A.N.; Zimin, Yu.B.; Korshak, V.V., Thermodynamics of synthesis of poly-(p,p'-diphenyleneoxide)pyromellitimide, Polym. Sci. USSR, 1977, 19, 1766-1775. [all data]

Baroody and Carpenter, 1972
Baroody, E.E.; Carpenter, G.A., Heats of formation of propellant compounds (U), Rpt. Naval Ordnance Systems Command Task No. 331-003/067-1/UR2402-001 for Naval Ordance Station, Indian Head, MD, 1972, 1-9. [all data]

Mullayanov, Mukhutdinov, et al., 1967
Mullayanov, F.I.; Mukhutdinov, R.Kh.; Mazitov, M.F.; Buz'ko, M.F.; Borshchenko, V.P.; Krashennikova, V.N., Some properties of pyromellitic dianhydride, Khim. Prom. (Moscow), 1967, 43, 505-506. [all data]

Dunn, Rahman, et al., 1978
Dunn, A.G.; Rahman, A.; Staveley, L.A.K., The heat capacity of pyromellitic dianhydride and of its 1-1 charge-transfer complex with pyrene, J. Chem. Thermodynam., 1978, 10, 787-796. [all data]

Karyakin, Mochalov, et al., 1973
Karyakin, N.V.; Mochalov, A.N.; Kunyevskaya, S.G.; Aron, B.M.; Rabinovich, I.B., Low temperature specific heat of tetracarboxylic acid dianhydrides, Tr. Khim. Khim. Tekhnol, 1973, (1), 60-61. [all data]

Karyakin, Bazhan, et al., 1977, 2
Karyakin, N.V.; Bazhan, N.G.; Sapozhnikov, V.N.; Shvetsova, K.G.; Berestneva, G.L.; Lomteva, A.N.; Zimin, Yu.B.; Korshak, V.V., Thermodynamics of synthesis of poly-(p,p'-diphenylene oxide)pyromellitimide, Vysokomol. Soedin., 1977, A19, 1541-1548. [all data]

Marchidan and Ciopec, 1978
Marchidan, D.I.; Ciopec, M., Thermodynamic properties of maleic, trimellitic and pyromellitic anhydrides, Rev. Roum. Chim., 1978, 23, 19-29. [all data]

Notes

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Symbols used in this document:

C_p,solid	Constant pressure heat capacity of solid
S°_{solid,1 bar}	Entropy of solid at standard conditions (1 bar)
Δ_cH°_solid	Enthalpy of combustion of solid at standard conditions
Δ_fH°_solid	Enthalpy of formation of solid at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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