Iodomethane
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| Names | |||
|---|---|---|---|
| Preferred IUPAC name
Iodomethane | |||
Other names
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| Identifiers | |||
3D model (JSmol) |
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| Abbreviations |
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| 969135 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.000.745 | ||
| EC Number |
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| 1233 | |||
| KEGG | |||
| MeSH | methyl+iodide | ||
PubChem CID |
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| RTECS number |
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| UNII | |||
| UN number | 2644 | ||
CompTox Dashboard (EPA) |
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SMILES
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| Properties | |||
| CH3I | |||
| Molar mass | 141.939 g·mol−1 | ||
| Appearance | Colorless liquid | ||
| Odor | Pungent, ether-like | ||
| Density | 2.28 g·mL−1 | ||
| Melting point | −66.5 °C; −87.6 °F; 206.7 K | ||
| Boiling point | 42.4 to 42.8 °C; 108.2 to 108.9 °F; 315.5 to 315.9 K | ||
| 14 g·L−1 (at 20 °C, 68 °F) | |||
| log P | 1.609 | ||
| Vapor pressure | 54.4 kPa (at 20 °C, 68 °F) | ||
Henry's law constant (kH) |
1.4 μmol·Pa−1·kg−1 | ||
Magnetic susceptibility (χ) |
−57.2·10−6 cm3·mol−1 | ||
Refractive index (nD) |
1.530–1.531 | ||
| Structure | |||
Molecular shape |
Tetrahedron | ||
| Thermochemistry | |||
Heat capacity (C) |
82.75 J·K−1·mol−1 | ||
Std enthalpy of formation (ΔfH⦵298) |
−14.1 – −13.1 kJ·mol−1 | ||
Std enthalpy of combustion (ΔcH⦵298) |
−808.9 – −808.3 kJ·mol−1 | ||
| Hazards | |||
| GHS labelling: | |||
| Danger | |||
| H301, H312, H315, H331, H335, H351 | |||
| P261, P280, P301+P310, P311 | |||
| NFPA 704 (fire diamond) |
3
0
0 | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
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LC50 (median concentration) |
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LCLo (lowest published) |
3800 ppm (rat, 15 min) | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 5 ppm (28 mg/m3) [skin] | ||
REL (Recommended) |
Ca TWA 2 ppm (10 mg/m3) [skin] | ||
IDLH (Immediate danger) |
Ca [100 ppm] | ||
| Related compounds | |||
Related iodomethanes |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
Iodomethane, also called methyl iodide, and commonly abbreviated "MeI", is the chemical compound with the formula CH3I. It is a dense, colorless, volatile liquid. In terms of chemical structure, it is related to methane by replacement of one hydrogen atom by an atom of iodine. It is naturally emitted by rice plantations in small amounts. It is also produced in vast quantities estimated to be greater than 214,000 tons annually by algae and kelp in the world's temperate oceans, and in lesser amounts on land by terrestrial fungi and bacteria. It is used in organic synthesis as a source of methyl groups.
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