Hydrogen cyanide

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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil299.0 ± 0.5KAVGN/AAverage of 15 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus260. ± 1.KAVGN/AAverage of 13 out of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple259.86KN/AGiauque and Ruehrwein, 1939Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
6.0270298.85N/AGiauque and Ruehrwein, 1939, 2P = 101.325 kPa.; DH
6.72274.AStephenson and Malanowski, 1987Based on data from 259. to 299. K.; AC
6.64313.AStephenson and Malanowski, 1987Based on data from 298. to 457. K.; AC
6.72272.N/AIwasaki and Date, 1975Based on data from 257. to 315. K.; AC
6.69277.N/ALewis and Schutz, 1934Based on data from 259. to 294. K.; AC
6.64282.N/APerry and Porter, 1926Based on data from 265. to 300. K.; AC
6.72272.N/ASinozaki, Hara, et al., 1926Based on data from 257. to 319. K.; AC
6.50303.MMSinozaki, Hara, et al., 1926Based on data from 256. to 319. K.; AC

Entropy of vaporization

ΔvapS (cal/mol*K) Temperature (K) Reference Comment
20.17298.85Giauque and Ruehrwein, 1939, 2P; DH

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
256.73 to 319.384.668461340.791-11.592Sinozaki, Hara, et al., 1926Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
8.51248.N/AStephenson and Malanowski, 1987Based on data from 236. to 259. K.; AC
8.99228.AStull, 1947Based on data from 202. to 254. K.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
2.009259.90Giauque and Ruehrwein, 1939, 2DH

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
7.729259.90Giauque and Ruehrwein, 1939, 2DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Gas Chromatography

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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

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillaryCP Sil 5 CB20.319.9Do and Raulin, 199225. m/0.15 mm/2. μm, H2
CapillaryPoraPLOT Q160.300.Do and Raulin, 198910. m/0.32 mm/10. μm, H2

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryPolydimethyl siloxane320.Staples, 2006Program: not specified

References

Go To: Top, Phase change data, Gas Chromatography, Notes

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

Giauque and Ruehrwein, 1939
Giauque, W.F.; Ruehrwein, R.A., The Entropy of Hydrogen Cyanide. Heat Capacity, Heat of Vaporization and Vapor Pressure. Hydrogen Bond Polymerization of the Gas in Chains of Indefinite Length., J. Am. Chem. Soc., 1939, 61, 2626. [all data]

Giauque and Ruehrwein, 1939, 2
Giauque, W.F.; Ruehrwein, R.A., The entropy of hydrogen cyanide. Heat capacity, heat of vaporization and vapor pressure. Hydrogen bond polymerization of the gas in chains of indefinite length, J. Am. Chem. Soc., 1939, 61, 2626-2633. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Iwasaki and Date, 1975
Iwasaki, H.; Date, K., Koatsu Gasu, 1975, 12, 374. [all data]

Lewis and Schutz, 1934
Lewis, Gilbert N.; Schutz, Philip W., THE VAPOR PRESSURE OF LIQUID AND SOLID DEUTOCYANIC ACID, J. Am. Chem. Soc., 1934, 56, 4, 1002-1002, https://doi.org/10.1021/ja01319a514 . [all data]

Perry and Porter, 1926
Perry, J.H.; Porter, Frank, THE VAPOR PRESSURES OF SOLID AND LIQUID HYDROGEN CYANIDE 1, J. Am. Chem. Soc., 1926, 48, 2, [299]-302, https://doi.org/10.1021/ja01413a001 . [all data]

Sinozaki, Hara, et al., 1926
Sinozaki, Heima; Hara, Ryozaburo; Mitsukuri, Shinroku, THE VAPOUR PRESSURES OF HYDROGEN CYANIDE, Bull. Chem. Soc. Jpn., 1926, 1, 4, 59-61, https://doi.org/10.1246/bcsj.1.59 . [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]

Do and Raulin, 1992
Do, L.; Raulin, F., Gas chromatography of Titan's atmosphere. III. Analysis of low-molecular-weight hydrocarbons and nitriles with a CP-Sil-5 CB WCOT capillary column, J. Chromatogr., 1992, 591, 1-2, 297-301, https://doi.org/10.1016/0021-9673(92)80247-R . [all data]

Do and Raulin, 1989
Do, L.; Raulin, F., Gas chromatography of Titan's atmosphere. I. Analysis of low-molecular-weight hydrocarbons and nitriles with a PoraPLOT Q porous polymer coated open-tubular capillary column, J. Chromatogr., 1989, 481, 45-54, https://doi.org/10.1016/S0021-9673(01)96751-2 . [all data]

Staples, 2006
Staples, E.J., Creating a compound library for chemical warfare agents for the ZNose, 2006, retrieved from http://www.estcal.com/TechPapers/Security/CWA-Libraries.pdf. [all data]


Notes

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