Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.
Chloromethane
| |||
| |||
| Names | |||
|---|---|---|---|
| Preferred IUPAC name
Chloromethane[2] | |||
| Other names | |||
| Identifiers | |||
3D model (JSmol)
|
|||
| 1696839 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.000.744 | ||
| EC Number |
| ||
| 24898 | |||
| KEGG | |||
| MeSH | Methyl+Chloride | ||
PubChem CID
|
|||
| RTECS number |
| ||
| UNII | |||
| UN number | 1063 | ||
CompTox Dashboard (EPA)
|
|||
| |||
| |||
| Properties | |||
| CH3Cl | |||
| Molar mass | 50.49 g·mol−1 | ||
| Appearance | Colorless gas | ||
| Odor | Faint, sweet odor[3] | ||
| Density | 1.003 g/mL (-23.8 °C, liquid)[1] 2.3065 g/L (0 °C, gas)[1] | ||
| Melting point | −97.4 °C (−143.3 °F; 175.8 K)[1] | ||
| Boiling point | −23.8 °C (−10.8 °F; 249.3 K)[1] | ||
| 5.325 g/L | |||
| log P | 1.113 | ||
| Vapor pressure | 506.09 kPa (at 20 °C (68 °F)) | ||
Henry's law
constant (kH) |
940 nmol/(Pa⋅kg) | ||
| −32.0·10−6 cm3/mol | |||
| Structure | |||
| Tetragonal | |||
| Tetrahedron | |||
| 1.9 D | |||
| Thermochemistry | |||
Std molar
entropy (S⦵298) |
234.36 J/(K⋅mol) | ||
Std enthalpy of
formation (ΔfH⦵298) |
−83.68 kJ/mol | ||
Std enthalpy of
combustion (ΔcH⦵298) |
−764.5–−763.5 kJ/mol | ||
| Hazards | |||
| GHS labelling: | |||
 
| |||
| Danger | |||
| H220, H351, H373 | |||
| P210, P281, P410+P403 | |||
| NFPA 704 (fire diamond) | |||
| Flash point | −20 °C (−4 °F; 253 K)[1] | ||
| 625 °C (1,157 °F; 898 K)[1] | |||
| Explosive limits | 8.1–17.4%[3] | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose)
|
150–180 mg/kg (oral, rat)[1] 5.3 mg/L (4 h, inhalation, rat)[1] | ||
LC50 (median concentration)
|
72,000 ppm (rat, 30 min) 2200 ppm (mouse, 6 h) 2760 ppm (mammal, 4 h) 2524 ppm (rat, 4 h)[4] | ||
LCLo (lowest published)
|
20,000 ppm (guinea pig, 2 h) 14,661 ppm (dog, 6 h)[4] | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible)
|
TWA 100 ppm C 200 ppm 300 ppm (5-minute maximum peak in any 3 hours)[3] | ||
REL (Recommended)
|
Ca[3] | ||
IDLH (Immediate danger)
|
Ca [2000 ppm][3] | ||
| Related compounds | |||
Related alkanes
|
|||
Related compounds
|
2-Chloroethanol | ||
| Supplementary data page | |||
| Chloromethane (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |||
Chloromethane, also called methyl chloride, Refrigerant-40, R-40 or HCC 40, is an organic compound with the chemical formula CH3Cl. One of the haloalkanes, it is a colorless, sweet-smelling, flammable gas. Methyl chloride is a crucial reagent in industrial chemistry, although it is rarely present in consumer products,[5] and was formerly utilized as a refrigerant. Most chloromethane is biogenic.
- ^ a b c d e f g h i j k Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
- ^ International Union of Pure and Applied Chemistry (2014). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. The Royal Society of Chemistry. p. 1033. doi:10.1039/9781849733069. ISBN 978-0-85404-182-4.
- ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0403". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b "Methyl chloride". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ Cite error: The named reference
Rosswas invoked but never defined (see the help page).
Previous Page Next Page
