Methane, iodo-
- Formula: CH3I
- Molecular weight: 141.9390
- IUPAC Standard InChIKey: INQOMBQAUSQDDS-UHFFFAOYSA-N
- CAS Registry Number: 74-88-4
- 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. - Isotopologues:
- Other names: Iodomethane; Methyl iodide; CH3I; Halon 10001; Iodometano; Iodure de methyle; Jod-methan; Joodmethaan; Methyljodid; Methyljodide; Metylu jodek; Monoioduro di metile; Rcra waste number U138; UN 2644; Methyl iodine; Monoiodomethane; NSC 9366
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Phase change data
Go To: Top, IR Spectrum, 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
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 315.7 ± 0.2 | K | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 206.7 | K | N/A | Timmermans, 1952 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 208.1 | K | N/A | Timmermans, 1911 | Uncertainty assigned by TRC = 0.4 K; TRC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
7.27 | 243. | A | Stephenson and Malanowski, 1987 | Based on data from 228. to 337. K.; AC |
6.33 | 330. | A | Stephenson and Malanowski, 1987 | Based on data from 315. to 502. K.; AC |
7.43 | 217. | N/A | Wren and Vikis, 1982 | Based on data from 208. to 227. K.; AC |
6.98 | 274. | EB | Boublík and Aim, 1972 | Based on data from 259. to 314. K. See also Kudchadker, Kudchadker, et al., 1979.; AC |
7.27 | 233. | N/A | Stull, 1947 | Based on data from 218. to 315. K.; AC |
6.74 | 288. | N/A | Ewert, 1936 | Based on data from 273. to 307. K.; AC |
6.790 | 315.8 | V | Thompson and Linnett, 1936 | ALS |
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 |
---|---|---|---|---|---|
218. to 315.6 | 4.1497 | 1177.78 | -32.058 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
315.6 to 521. | 4.14326 | 1223.831 | -20.179 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
273.3 to 307.6 | 5.13710 | 1755.986 | 26.111 | Thompson and Linnett, 1936 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
9.61 ± 0.1 | 191. | VG | Wren and Vikis, 1982 | Based on data from 176. to 227. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.18 | 206.8 | Wren and Vikis, 1982 | AC |
IR Spectrum
Go To: Top, Phase change data, References, Notes
Data compiled by: Coblentz Society, Inc.
- GAS (200 mmHg DILUTED TO A TOTAL PRESSURE OF 600 mmHg WITH N2); DOW KBr FOREPRISM; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
- LIQUID; Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
References
Go To: Top, Phase change data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Timmermans, 1952
Timmermans, J.,
Freezing points of organic compounds. VVI New determinations.,
Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]
Timmermans, 1911
Timmermans, J.,
Researches on the freezing point of organic liquid compounds,
Bull. Soc. Chim. Belg., 1911, 25, 300. [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]
Wren and Vikis, 1982
Wren, D.J.; Vikis, A.C.,
Vapour pressure of CH3I in the temperature range 176 to 227 K,
The Journal of Chemical Thermodynamics, 1982, 14, 5, 435-437, https://doi.org/10.1016/0021-9614(82)90135-5
. [all data]
Boublík and Aim, 1972
Boublík, T.; Aim, K.,
Heats of vaporization of simple non-spherical molecule compounds,
Collect. Czech. Chem. Commun., 1972, 37, 11, 3513-3521, https://doi.org/10.1135/cccc19723513
. [all data]
Kudchadker, Kudchadker, et al., 1979
Kudchadker, A.P.; Kudchadker, S.A.; Shukla, R.P.; Patnaik, P.R.,
Vapor pressures and boiling points of selected halomethanes,
J. Phys. Chem. Ref. Data, 1979, 8, 2, 499, https://doi.org/10.1063/1.555600
. [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]
Ewert, 1936
Ewert, M.,
Bull. Soc. Chim. Belg., 1936, 45, 493. [all data]
Thompson and Linnett, 1936
Thompson, H.W.; Linnett, J.W.,
The vapour pressures and association of some metallic and non-metallic alkyls,
Trans. Faraday Soc., 1936, 32, 681-685. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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