Propylene Glycol

InChI version 1.06

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Gas phase thermochemistry data

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas-429.8 ± 4.1kJ/molCcbKnauth and Sabbah, 1990ALS
Δfgas-421. ± 3.kJ/molCcbGardner and Hussain, 1972ALS
Δfgas-435.3kJ/molN/AMoureu and Dode, 1937Value computed using ΔfHliquid° value of -500.3±1.8 kj/mol from Moureu and Dode, 1937 and ΔvapH° value of 65.0 kj/mol from Gardner and Hussain, 1972.; DRB

Condensed phase thermochemistry data

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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
Δfliquid-501.0 ± 4.1kJ/molCcbKnauth and Sabbah, 1990ALS
Δfliquid-486. ± 3.kJ/molCcbGardner and Hussain, 1972ALS
Δfliquid-500.3 ± 1.8kJ/molCcbMoureu and Dode, 1937Reanalyzed by Cox and Pilcher, 1970, Original value = -499.2 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Δcliquid-1822.9 ± 4.1kJ/molCcbKnauth and Sabbah, 1990Corresponding Δfliquid = -501.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcliquid-1838.1 ± 2.3kJ/molCcbGardner and Hussain, 1972Corresponding Δfliquid = -485.76 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcliquid-1823.5 ± 1.8kJ/molCcbMoureu and Dode, 1937Reanalyzed by Cox and Pilcher, 1970, Original value = -1824. kJ/mol; Corresponding Δfliquid = -500.32 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
189.9298.Zaripov, 1982T = 298, 323, 363 K.; DH
177.0303.Kawaizumi, Otake, et al., 1972DH
180.3276.7Parks and Huffman, 1927T = 91 to 277 K. Value is unsmoothed experimental datum.; DH

Phase change data

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Tboil460. ± 2.KAVGN/AAverage of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Δvap67. ± 8.kJ/molAVGN/AAverage of 9 values; Individual data points

Enthalpy of vaporization

Enthalpy of vaporization">
ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
66.5413.TGAAl-Najjar and Al-Sammerrai, 2007Based on data from 373. to 408. K.; AC
60.0 ± 0.3380.EBSteele, Chirico, et al., 2002Based on data from 365. to 496. K.; AC
56.2 ± 0.2420.EBSteele, Chirico, et al., 2002Based on data from 365. to 496. K.; AC
52.0 ± 0.3460.EBSteele, Chirico, et al., 2002Based on data from 365. to 496. K.; AC
47.5 ± 0.6500.EBSteele, Chirico, et al., 2002Based on data from 365. to 496. K.; AC
58.6333.AStephenson and Malanowski, 1987Based on data from 318. to 461. K. See also Stull, 1947.; AC
64. ± 2.353.VGardner and Hussain, 1972ALS
58.2378.N/ASchierholtz and Staples, 1935Based on data from 353. to 403. K.; AC
56.431.N/ASchierholtz and Staples, 1935Based on data from 403. to 460. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)

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Temperature (K) A B C Reference Comment
318.7 to 461.46.079362692.187-17.94Stull, 1947Coefficents calculated by NIST from author's data.

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Reaction thermochemistry data

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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Individual Reactions

Quantity Value Units Method Reference Comment
Δr-3.kJ/molEqkAnteunis and Rommelaere, 1970liquid phase
Quantity Value Units Method Reference Comment
Δr-6.93kJ/molKinZhang and Luo, 1991liquid phase

Gas phase ion energetics data

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH5O + 10.04 ± 0.05CH3COEIHolmes and Lossing, 1984LBLHLM
C2H5O + 10.16 ± 0.05CH2OHEIHolmes and Lossing, 1984LBLHLM
C2H5O + 10.25CH2OHEILossing, 1977LLK

IR Spectrum

Data compiled by: Coblentz Society, Inc.

Mass spectrum (electron ionization)

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Spectrum

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