Hydrogen bromide

• Formula: BrH
• Molecular weight: 80.912
• IUPAC Standard InChI: InChI=1S/BrH/h1H Copy

  
• IUPAC Standard InChIKey: CPELXLSAUQHCOX-UHFFFAOYSA-N Copy
• CAS Registry Number: 10035-10-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Hydrobromic acid; Anhydrous hydrobromic acid; HBr; Hydrogen bromide, anhydrous-; Acide bromhydrique; Acido bromidrico; Bromowodor; Bromwasserstoff; Broomwaterstof; UN 1048; UN 1788; Hydrogen monobromide
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Constants of diatomic molecules
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 76
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Gas Phase Kinetics Database
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Gas phase thermochemistry data

Go To: Top, Phase change data, Constants of diatomic molecules, References, Notes

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

Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Phase change data

Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, References, Notes

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director

Antoine Equation Parameters

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

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Constants of diatomic molecules

Go To: Top, Gas phase thermochemistry data, Phase change data, References, Notes

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

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through December, 1976

Notes

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Constants of diatomic molecules, Notes

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

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]

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

Dreisbach, 1955
Dreisbach, R.R., Physical Properties of Chemical Compounds, Advances in Chemistry Series No. 15, Am. Chem. Soc.: Washington, D. C., 1955. [all data]

Maass and Russell, 1918
Maass, O.; Russell, J., Unsaturation and molecular compound formation, J. Am. Chem. Soc., 1918, 40, 1561-1573. [all data]

Beckmann and Waentig, 1910
Beckmann, E.; Waentig, P., Cryoscopic Measurements at Low Temperatures, Z. Anorg. Chem., 1910, 67, 17. [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Barrow and Stamper, 1961
Barrow, R.F.; Stamper, J.G., The absorption spectrum of gaseous hydrogen bromide in the Schumann region. I. Rotational analysis, Proc. R. Soc. London A, 1961, 263, 259. [all data]

Stamper, 1962
Stamper, J.G., The absorption spectrum of DBr in the vacuum ultraviolet region, Can. J. Phys., 1962, 40, 1279. [all data]

Ginter and Tilford, 1971
Ginter, M.L.; Tilford, S.G., Electronic spectra and structure of the hydrogen halides. States associated with the (σ²π³)cπ and (σ²π³) cσ configurations of HBr and DBr, J. Mol. Spectrosc., 1971, 37, 159. [all data]

Stamper and Barrow, 1961
Stamper, J.G.; Barrow, R.F., The V(¹Σ⁺)-N(¹Σ⁺) transition of hydrogen bromide, J. Phys. Chem., 1961, 65, 250. [all data]

Bates, Halford, et al., 1935
Bates, J.R.; Halford, J.O.; Anderson, L.C., A comparison of some physical properties of hydrogen and deuterium bromides, J. Chem. Phys., 1935, 3, 531. [all data]

Goodeve and Taylor, 1935
Goodeve, C.F.; Taylor, A.W.C., The continuous absorption spectrum of hydrogen bromide, Proc. R. Soc. London A, 1935, 152, 221. [all data]

Datta and Chakravarty, 1941
Datta, S.; Chakravarty, B., The continuous absorption spectra of the hydrogen-halides. Part I - HBr, Proc. Natl. Inst. Sci. India, 1941, 7, 297. [all data]

Romand, 1949
Romand, J., Absorption ultraviolette dans la region de Schumann etude de: ClH, BrH et lH gazeux, Ann. Phys. (Paris), 1949, 4, 527. [all data]

Huebert and Martin, 1968
Huebert, B.J.; Martin, R.M., Gas-phase far-ultraviolet absorption spectrum of hydrogen bromide and hydrogen iodide, J. Phys. Chem., 1968, 72, 3046. [all data]

Rank, Fink, et al., 1965
Rank, D.H.; Fink, U.; Wiggins, T.A., High resolution measurements on the infrared absorption spectrum of HBr, J. Mol. Spectrosc., 1965, 18, 170. [all data]

Hansler and Oetjen, 1953
Hansler, R.L.; Oetjen, R.A., The infrared spectra of HCl, DCl, HBr, and NH₃ in the region from 40 to 140 microns, J. Chem. Phys., 1953, 21, 1340. [all data]

Jones and Gordy, 1964
Jones, G.; Gordy, W., Submillimeter-wave spectra of HCl and HBr, Phys. Rev., 1964, 136, 1229. [all data]

Van Dijk and Dymanus, 1969
Van Dijk, F.A.; Dymanus, A., Hyperfine structure of the rotational spectrum of HBr and in the submillimeter wave region, Chem. Phys. Lett., 1969, 4, 170. [all data]

Cherlow, Hyatt, et al., 1975
Cherlow, J.M.; Hyatt, H.A.; Porto, S.P.S., Raman scattering in hydrogen halide gases, J. Chem. Phys., 1975, 63, 3996. [all data]

Dabbousi, Meerts, et al., 1973
Dabbousi, O.B.; Meerts, W.L.; de Leeuw, F.H.; Dymanus, A., Stark-Zeeman hyperfine structure of H⁷⁹Br and H⁸¹Br by molecular-beam electric-resonance spectroscopy, Chem. Phys., 1973, 2, 473. [all data]

Bunker, 1972
Bunker, P.R., On the breakdown of the Born-Oppenheimer approximation for a diatomic molecule, J. Mol. Spectrosc., 1972, 5, 478. [all data]

Chamberlain and Gebbie, 1965
Chamberlain, J.E.; Gebbie, H.A., Sub-millimetre dispersion and rotational line strengths of the hydrogen halides, Nature (London), 1965, 208, 480. [all data]

Atwood, Vu, et al., 1967
Atwood, M.R.; Vu, H.; Vodar, B., Forme et structures fines de la bande induite par la pression dans la bande fondamentale de vibration-rotation des molecules HF, HCl et HBr, Spectrochim. Acta, 1967, 23, 553. [all data]

Weiss and Cole, 1967
Weiss, S.; Cole, R.H., Pressure-induced rotational quadrupole spectra of HCl and HBr, J. Chem. Phys., 1967, 46, 644. [all data]

Babrov, 1964
Babrov, H.J., Strengths and self-broadened widths of the lines of the hydrogen bromide fundamental band, J. Chem. Phys., 1964, 40, 831. [all data]

Pourcin, Bachet, et al., 1967
Pourcin, J.; Bachet, G.; Coulon, R., Possibilite d'une absorption non resonnante induite dans le spectre de rotation pure de HBr gazeux perturbe par des gaz comprimes, C.R. Acad. Sci. Paris, Ser. B, 1967, 264, 975. [all data]

van Dijk and Dymanus, 1974
van Dijk, F.A.; Dymanus, A., Hyperfine and Stark spectrum of DBr in the millimeter-wave region, Chem. Phys., 1974, 6, 474. [all data]

Schurin and Rollefson, 1957
Schurin, B.; Rollefson, R., Infrared dispersion of hydrogen bromide, J. Chem. Phys., 1957, 26, 1089. [all data]

Tokuhiro, 1967
Tokuhiro, T., Vibrational and rotational effects on the nuclear quadrupole coupling constants in hydrogen, deuterium, and tritium halides, J. Chem. Phys., 1967, 47, 109. [all data]

van Dijk and Dymanus, 1970
van Dijk, F.A.; Dymanus, A., The electric dipole moment of HI and HBr, Chem. Phys. Lett., 1970, 5, 387. [all data]

Watanabe, 1957
Watanabe, K., Ionization potentials of some molecules, J. Chem. Phys., 1957, 26, 542. [all data]

Frost, McDowell, et al., 1967
Frost, D.C.; McDowell, C.A.; Vroom, D.A., Photoelectron spectra of the halogens and the hydrogen halides, J. Chem. Phys., 1967, 46, 4255. [all data]

Lempka, Passmore, et al., 1968
Lempka, H.J.; Passmore, T.R.; Price, W.C., The photoelectron spectra and ionized states of the halogen acids, Proc. Roy. Soc. (London), 1968, A304, 53. [all data]

Delwiche, Natalis, et al., 1972
Delwiche, J.; Natalis, P.; Momigny, J.; Collin, J.E., On the photoelectron spectra of HBr and DBr, J. Electron Spectrosc. Relat. Phenom., 1972, 1, 219. [all data]

Terwilliger and Smith, 1975
Terwilliger, D.T.; Smith, A.L., Autoionization in diatomics: measured line shape parameters and predicted photoelectron spectra for some autoionizing states of the hydrogen halides, J. Chem. Phys., 1975, 63, 1008. [all data]

Naude and Verleger, 1950
Naude, S.M.; Verleger, H., The vibration-rotation bands of the hydrogen halides HF, H³⁵Cl, H³⁷Cl, H⁷⁹Br, H⁸¹Br and H¹²⁷I, Proc. Phys. Soc. London Sect. A, 1950, 63, 470. [all data]

Thompson, Williams, et al., 1952
Thompson, H.W.; Williams, R.L.; Callomon, H.J., The fundamental vibration band of hydrogen bromide, Spectrochim. Acta, 1952, 5, 313. [all data]

Plyler, 1960
Plyler, E.K., Infrared spectrum of hydrobromic aid, J. Res. Nat. Bur. Stand. Sect. A, 1960, 64, 377. [all data]

Bernage, Niay, et al., 1973
Bernage, P.; Niay, P.; Bocquet, H.; Houdart, R., Etude des bandes d'absorption infrarouges v_0-3, v_0-4, v_0-5 de l'acide bromhydrique gazeux a l'aide d'un spectrometre sisam, Rev. Phys. Appl., 1973, 8, 333. [all data]

Mould, Price, et al., 1960
Mould, H.M.; Price, W.C.; Wilkinson, G.R., Infra-red emission from gases excited by a radio-frequency discharge, Spectrochim. Acta, 1960, 16, 479. [all data]

James and Thibault, 1965
James, T.C.; Thibault, R.J., Infrared-emission spectrum of HBr excited in an electric discharge. Determination of molecular constants, J. Chem. Phys., 1965, 42, 1450. [all data]

Ogilvie and Koo, 1976
Ogilvie, J.F.; Koo, D., Dunham potential energy coefficients of the hydrogen halides and carbon monoxide, J. Mol. Spectrosc., 1976, 61, 332-336. [all data]

Babrov, Shabott, et al., 1965
Babrov, H.J.; Shabott, A.L.; Rao, B.S., Matrix elements for vibration-rotation transitions in the HBr overtone and hot bands, J. Chem. Phys., 1965, 42, 4124. [all data]

Rao and Lindquist, 1968
Rao, B.S.; Lindquist, L.H., Dipole matrix elements for vibration-rotation lines in the 2-0 band of the hydrogen bromide molecule, Can. J. Phys., 1968, 46, 2739. [all data]

Gustafson and Rao, 1970
Gustafson, B.P.; Rao, B.S., Dipole matrix elements for vibration-rotation lines in the fundamental band of the hydrogen bromide molecule, Can. J. Phys., 1970, 48, 330. [all data]

Urquhart, Clark, et al., 1972
Urquhart, D.N.; Clark, T.D.; Rao, B.S., The dipole moment function of H⁷⁹Br molecule, Z. Naturforsch. A, 1972, 27, 1563. [all data]

Jacobi, 1967
Jacobi, N., Electrical anharmonicities of diatomic molecules, J. Mol. Spectrosc., 1967, 22, 76. [all data]

Tipping and Herman, 1970
Tipping, R.H.; Herman, R.M., Line intensities in HBr vibration-rotation spectra, J. Mol. Spectrosc., 1970, 36, 404. [all data]

Rao, 1971
Rao, B.S., Vibration-rotation band strengths and dipole moment function of the H⁷⁹Br molecule, J. Phys. B:, 1971, 4, 791. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Constants of diatomic molecules, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Tfus	Fusion (melting) point
  ΔfH°gas	Enthalpy of formation of gas at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.