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
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
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.
Phase change data
Go To: Top, 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 (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
30.4 | 243. | A | Stephenson and Malanowski, 1987 | Based on data from 228. to 337. K.; AC |
26.5 | 330. | A | Stephenson and Malanowski, 1987 | Based on data from 315. to 502. K.; AC |
31.1 | 217. | N/A | Wren and Vikis, 1982 | Based on data from 208. to 227. K.; AC |
29.2 | 274. | EB | Boublík and Aim, 1972 | Based on data from 259. to 314. K. See also Kudchadker, Kudchadker, et al., 1979.; AC |
30.4 | 233. | N/A | Stull, 1947 | Based on data from 218. to 315. K.; AC |
28.2 | 288. | N/A | Ewert, 1936 | Based on data from 273. to 307. K.; AC |
28.41 | 315.8 | V | Thompson and Linnett, 1936 | ALS |
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.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
218. to 315.6 | 4.1554 | 1177.78 | -32.058 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
315.6 to 521. | 4.14897 | 1223.831 | -20.179 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
273.3 to 307.6 | 5.14281 | 1755.986 | 26.111 | Thompson and Linnett, 1936 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
40.2 ± 0.4 | 191. | VG | Wren and Vikis, 1982 | Based on data from 176. to 227. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.12 | 206.8 | Wren and Vikis, 1982 | AC |
References
Go To: Top, Phase change data, 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, 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
- 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.