Chemical Properties of Phthalic anhydride (CAS 85-44-9)

Phthalic anhydride

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InChI
InChI=1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
InChI Key
LGRFSURHDFAFJT-UHFFFAOYSA-N
Formula
C8H4O3
SMILES
O=C1OC(=O)c2ccccc21
Molecular Weight1
148.12
CAS
85-44-9
Other Names
  • 1,2-Benzenedicarboxylic acid anhydride
  • 1,2-Benzenedicarboxylic anhydride
  • 1,3-Dioxophthalan
  • 1,3-Isobenzofurandione
  • 1,3-Phthalandione
  • Anhydrid kyseliny ftalove
  • Anhydride phtalique
  • Anidride ftalica
  • Araldite HT 901
  • ESEN
  • Ftaalzuuranhydride
  • Ftalanhydrid
  • Ftalowy bezwodnik
  • HT 901
  • Isobenzofuran, 1,3-dihydro-1,3-dioxo-
  • Isobenzofuran-1,3-dione
  • NCI-C03601
  • NSC 10431
  • Phthalandione
  • Phthalanhydride
  • Phthalic acid anhydride
  • Phthalsaeureanhydrid
  • Rcra waste number U190
  • Retarder AK
  • Retarder ESEN
  • Retarder PD
  • Retarder PX
  • Sconoc 7
  • TGL 6525
  • Vulkalent B/C
  • o-Phthalic acid anhydride
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Physical Properties

Property Value Unit Source
Δcsolid -3259.40 kJ/mol NIST
μ 5.30 debye KDB
EA [1.25; 1.28] eV Show Hide
EA 1.25 ± 0.09 eV NIST
EA 1.28 ± 0.05 eV NIST
Δf -143.58 kJ/mol Joback Calculated Property
Δfgas -371.80 kJ/mol KDB
Δfsolid -460.37 kJ/mol NIST
Δfus 23.55 kJ/mol Thermal...
Δsub 88.70 ± 2.30 kJ/mol NIST
Δvap 49.57 kJ/mol Joback Calculated Property
IE [10.10; 10.25] eV Show Hide
IE 10.10 eV NIST
IE 10.25 ± 0.05 eV NIST
log10WS -1.39 Aq. Sol...
logPoct/wat 0.997 Crippen Calculated Property
McVol 97.970 ml/mol McGowan Calculated Property
NFPA Fire 1 KDB
NFPA Health 2 KDB
Pc 4760.00 kPa KDB
Inp [225.33; 1319.00]   Show Hide
Inp 1313.00 NIST
Inp 1319.00 NIST
Inp 225.33 NIST
Inp 225.33 NIST
Inp 1319.00 NIST
Inp 1313.00 NIST
solid,1 bar [179.50; 180.00] J/mol×K Show Hide
solid,1 bar 180.00 J/mol×K NIST
solid,1 bar 179.50 J/mol×K NIST
Tboil [557.20; 560.00] K Show Hide
Tboil 560.00 K KDB
Tboil 557.20 K NIST
Tboil 558.25 ± 0.30 K NIST
Tboil 557.83 ± 0.30 K NIST
Tc 810.00 K KDB
Tfus [400.00; 404.76] K Show Hide
Tfus 404.55 K Aq. Sol...
Tfus 404.00 K KDB
Tfus 403.73 ± 0.20 K NIST
Tfus 404.15 K NIST
Tfus 404.15 ± 0.25 K NIST
Tfus 404.35 ± 0.15 K NIST
Tfus Outlier 400.00 ± 1.50 K NIST
Tfus 403.00 ± 3.00 K NIST
Tfus 404.75 ± 0.15 K NIST
Tfus 404.76 ± 0.07 K NIST
Tfus 404.75 ± 0.07 K NIST
Tfus 404.05 ± 0.40 K NIST
Vc 0.368 m3/kmol KDB
Zc 0.2600960 KDB

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [226.20; 282.16] J/mol×K [588.10; 850.92] Show Hide
Cp,gas 226.20 J/mol×K 588.10 Joback Calculated Property
Cp,gas 237.41 J/mol×K 631.90 Joback Calculated Property
Cp,gas 247.88 J/mol×K 675.71 Joback Calculated Property
Cp,gas 257.60 J/mol×K 719.51 Joback Calculated Property
Cp,gas 266.56 J/mol×K 763.31 Joback Calculated Property
Cp,gas 274.75 J/mol×K 807.11 Joback Calculated Property
Cp,gas 282.16 J/mol×K 850.92 Joback Calculated Property
Cp,solid [160.00; 161.80] J/mol×K [298.10; 298.15] Show Hide
Cp,solid 161.80 J/mol×K 298.10 NIST
Cp,solid 160.00 J/mol×K 298.15 NIST
ΔfusH [22.10; 23.09] kJ/mol [403.30; 404.50] Show Hide
ΔfusH 23.09 kJ/mol 403.30 NIST
ΔfusH 23.09 kJ/mol 403.30 NIST
ΔfusH 22.10 kJ/mol 404.50 NIST
ΔsubH [84.40; 88.40] kJ/mol [318.00; 368.00] Show Hide
ΔsubH 88.40 ± 1.20 kJ/mol 318.00 NIST
ΔsubH 87.90 kJ/mol 348.00 NIST
ΔsubH 84.40 ± 1.20 kJ/mol 368.00 NIST
ΔvapH [52.10; 87.90] kJ/mol [298.15; 521.00] Show Hide
ΔvapH 87.90 kJ/mol 298.15 The eff...
ΔvapH 63.90 ± 2.50 kJ/mol 430.50 NIST
ΔvapH 52.10 kJ/mol 482.50 NIST
ΔvapH 54.10 kJ/mol 521.00 NIST

Correlations

Property Value Unit Temperature (K) Source
Pvap [1.33; 202.65] kPa [427.98; 587.15] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.65238e+01
Coefficient B-5.76785e+03
Coefficient C-7.27290e+01
Temperature range, min.427.98
Temperature range, max.587.15
Pvap 1.33 kPa 427.98 Calculated Property
Pvap 2.88 kPa 445.67 Calculated Property
Pvap 5.80 kPa 463.35 Calculated Property
Pvap 11.00 kPa 481.04 Calculated Property
Pvap 19.77 kPa 498.72 Calculated Property
Pvap 33.91 kPa 516.41 Calculated Property
Pvap 55.82 kPa 534.09 Calculated Property
Pvap 88.55 kPa 551.78 Calculated Property
Pvap 135.95 kPa 569.46 Calculated Property
Pvap 202.65 kPa 587.15 Calculated Property

Similar Compounds

Trimellitic acid anhydride. Dimethyl phthalate. Naphtho[1,2-c]furan-1,3-dione. 1,3-Isobenzofurandione, 5-chloro-. Benzoic acid, anhydride. 4-Methylphthalic anhydride. 5-Isobenzofurancarbonyl chloride, 1,3-dihydro-1,3-dioxo-. Benzoic acid, 2-methyl-, anhydride. 1,2-Benzenedicarboxylic acid. Methyl hydrogen phthalate. 1,2,3-Benzenetricarboxylic acid, trimethyl ester. 1,3-Isobenzofurandione, 4-methyl-. 1,2,4-Benzenetricarboxylic acid, trimethyl ester. Diprop-2-ynyl phthalate. 1,3-Isobenzofurandione, 5,5'-carbonylbis-.

Find more compounds similar to Phthalic anhydride.

Mixtures

Sources

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Outlier This icon means that the value is more than 2 standard deviations away from the property mean.