Methanol
Methanol, forby kent as methyl alcohol amang ither names, is a chemical wi the formula CH3OH (eften abbreviatit MeOH). Methanol acquired the name "wid alcohol" acause it wis ance produced chiefly as a biproduct o the destructive distillation o wid. The day, industrial methanol is produced in a catalytic process directly frae carbon monoxide, carbon dioxide, an hydrogen.
Names | |||
---|---|---|---|
Preferred IUPAC name Methanol[1] | |||
Ither names Carbinol Columbian spirits Hydroxymethane Methyl alcohol Methyl hydrate Methyl hydroxide Methylic alcohol Methylol Pyroligneous spirit Wood alcohol Wood naphtha Wood spirit | |||
Identifiers | |||
CAS Nummer | |||
3D model (JSmol) | |||
3DMet | B01170 | ||
Beilstein Reference | 1098229 | ||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
EC Nummer | 200-659-6 | ||
Gmelin Reference | 449 | ||
KEGG | |||
MeSH | Methanol | ||
PubChem CID | |||
RTECS nummer | PC1400000 | ||
UNII | |||
UN nummer | 1230 | ||
| |||
SMILES
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Properties | |||
CH 3OH | |||
Molar mass | 32.04 g mol−1 | ||
Appearance | Colourless liquid | ||
Density | 0.792 g·cm−3[2] | ||
Meltin pynt | −97.6 °C (−143.7 °F; 175.6 K) | ||
Bylin pynt | 64.7 °C (148.5 °F; 337.8 K) | ||
Solubility in watter | miscible | ||
log P | -0.69 | ||
Vapour pressur | 13.02 kPa (at 20 °C) | ||
Acidity (pKa) | 15.5[3] | ||
Magnetic susceptibility | -21.40·10−6 cm3/mol | ||
Refractive index (nD) | 1.33141[4] | ||
Viscosity | 0.545 mPa×s (at 25 °C) [5] | ||
Dipole moment | 1.69 D | ||
Hazards[10] | |||
GHS pictograms | [6] | ||
GHS signal wird | Danger [6] | ||
GHS hazard statements | H225, H301, H311, H331, H370[6] | ||
GHS precautionary statements | P210, P233, P240, P241, P242, P243, P260, P264, P270, P280, P301+310, P303+361+353, P304+340, P330[6] | ||
NFPA 704 | 3 3 0 | ||
Flash pynt | 11 tae 12 °C (52 tae 54 °F; 284 tae 285 K) | ||
Autoigneetion temperatur | 470[7] °C (878 °F; 743 K) | ||
Explosive leemits | 6%-36%[8] | ||
Lethal dose or concentration (LD, LC): | |||
LD50 (Median dose) | 5628 mg/kg (rat, oral) 7300 mg/kg (moose, oral) 12880 mg/kg (rat, oral) 14200 mg/kg (rabbit, oral)[9] | ||
LC50 (Median concentration) | 64,000 ppm (rat, 4 hr)[9] | ||
LCLo (Lawest published) | 33,082 ppm (cat, 6 hr) 37,594 ppm (moose, 2 hr)[9] | ||
US heal exposur leemits (NIOSH): | |||
PEL (Permissible) | TWA 200 ppm (260 mg/m3)[8] | ||
REL (Recommendit) | TWA 200 ppm (260 mg/m3) ST 250 ppm (325 mg/m3) [skin][8] | ||
IDLH (Immediate danger) | 6000 ppm[8] | ||
Relatit compoonds | |||
Relatit compoonds | Methanethiol Silanol | ||
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |||
verify (whit is ?) | |||
Infobox references | |||
References
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