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Boric acid


Gas phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Deltafgas-992.28kJ/molReviewChase, 1998Data last reviewed in December, 1964
Quantity Value Units Method Reference Comment
gas,1 bar295.23J/mol*KReviewChase, 1998Data last reviewed in December, 1964

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1200.1200. - 6000.
A 22.91803123.6309
B 182.031211.27103
C -125.7518-2.150124
D 34.687490.142479
E -0.145463-20.84674
F -1006.649-1075.104
G 273.1524383.4117
H -992.2774-992.2774
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1964 Data last reviewed in December, 1964

Condensed phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Deltafsolid-1094.8 ± 0.8kJ/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafsolid-1093.99kJ/molReviewChase, 1998Data last reviewed in December, 1964
Quantity Value Units Method Reference Comment
solid,1 bar89.95 ± 0.60J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
Quantity Value Units Method Reference Comment
solid88.70J/mol*KReviewChase, 1998Data last reviewed in December, 1964

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1500.
A 40.82396
B 195.2296
C -86.64855
D 13.60210
E -0.919735
F -1117.203
G 78.45126
H -1093.990
ReferenceChase, 1998
Comment Data last reviewed in December, 1964

Phase change data

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

Data compiled by: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
174.1 ± 4.7345.GSPankajavalli, Anthonysamy, et al., 2007Based on data from 326. - 363. K.

IR Spectrum

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

Data compiled by: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin MELLON INSTITUTE
Source reference COBLENTZ NO. 456
Date Not specified, most likely prior to 1970
State SOLID (NUJOL MULL)
Instrument Not specified, most likely a prism, grating, or hybrid spectrometer.
Path length
SPECTRAL CONTAMINATION DUE TO OIL AROUND 2900 CM-1
Resolution 4
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY NIST FROM HARD COPY

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Chemical Concepts
NIST MS number 158012

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


Vibrational and/or electronic energy levels

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

Data compiled by: Marilyn E. Jacox

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a' 1 OH stretch 3705 gas Ra Gilson, 1991
2 BOH deform. 1020 gas Ra Gilson, 1991
3 BO stretch 866 gas Ra Gilson, 1991
a 4 BO3 OPLA 666.4 Ar IR Andrews and Burkholder, 1992
4 BO3 OPLA 675.0 N2 IR Ogden and Young, 1988
5 Torsion 436.0 Ar IR Andrews and Burkholder, 1992
5 Torsion 513.8 N2 IR Ogden and Young, 1988
e' 6 OH stretch 3706 gas IR Gilson, 1991
6 OH stretch 3688.6 Ar IR Andrews and Burkholder, 1992
6 OH stretch 3668.5 N2 IR Ogden and Young, 1988
7 BO stretch 1429 gas IR Gilson, 1991
7 BO stretch 1414.9 Ar IR Andrews and Burkholder, 1992
7 BO stretch 1426.2 N2 IR Ogden and Young, 1988
8 HOB deform. 1017 gas IR Gilson, 1991
8 HOB deform. 992.4 Ar IR Andrews and Burkholder, 1992
8 HOB deform. 1009.9 N2 IR Ogden and Young, 1988
9 BO2 deform. 432.1 Ar IR Andrews and Burkholder, 1992
9 BO2 deform. 448.9 N2 IR Ogden and Young, 1988
e 10 HOB deform. 520 ± 5 Ar IR Andrews and Burkholder, 1992

Additional references: Jacox, 1998, page 326


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Notes

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Pankajavalli, Anthonysamy, et al., 2007
Pankajavalli, R.; Anthonysamy, S.; Ananthasivan, K.; Vasudeva Rao, P.R., Vapour pressure and standard enthalpy of sublimation of H3BO3, Journal of Nuclear Materials, 2007, 362, 1, 128-131, https://doi.org/10.1016/j.jnucmat.2006.12.025 . [all data]

Gilson, 1991
Gilson, T.R., J. Chem. Soc., 1991, Dalton Trans. 2463. [all data]

Andrews and Burkholder, 1992
Andrews, L.; Burkholder, T.R., Infrared spectra of molecular B(OH)3 and HOBO in solid argon, J. Chem. Phys., 1992, 97, 10, 7203, https://doi.org/10.1063/1.463545 . [all data]

Ogden and Young, 1988
Ogden, J.S.; Young, N.A., J. Chem. Soc., 1988, Dalton Trans. 1645. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References