Methanol
From Wikipedia, the free encyclopedia
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.
The "Scots" that wis uised in this airticle wis written bi a body that haesna a guid grip on the leid. Please mak this airticle mair better gin ye can. (October 2020) |
Nae tae be confused wi menthol or methanal.
Quick Facts Names, Identifiers ...
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Names | |||
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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 |
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3D model (JSmol) |
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3DMet | B01170 | ||
Beilstein Reference |
1098229 | ||
ChEBI | |||
ChEMBL | |||
ChemSpider |
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EC Nummer | 200-659-6 | ||
Gmelin Reference | 449 | ||
KEGG |
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MeSH | Methanol | ||
PubChem CID |
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RTECS nummer | PC1400000 | ||
UNII | |||
UN nummer | 1230 | ||
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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[6] | |||
GHS pictograms | [7] | ||
GHS signal wird | Danger [7] | ||
GHS hazard statements | H225, H301, H311, H331, H370[7] | ||
GHS precautionary statements | P210, P233, P240, P241, P242, P243, P260, P264, P270, P280, P301+310, P303+361+353, P304+340, P330[7] | ||
NFPA 704 |
3
3
0 | ||
Flash pynt | 11 tae 12 °C (52 tae 54 °F; 284 tae 285 K) | ||
Autoigneetion temperatur |
470[8] °C (878 °F; 743 K) | ||
Explosive leemits | 6%-36%[9] | ||
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)[10] | ||
LC50 (Median concentration) |
64,000 ppm (rat, 4 hr)[10] | ||
LCLo (Lawest published) |
33,082 ppm (cat, 6 hr) 37,594 ppm (moose, 2 hr)[10] | ||
US heal exposur leemits (NIOSH): | |||
PEL (Permissible) |
TWA 200 ppm (260 mg/m3)[9] | ||
REL (Recommendit) |
TWA 200 ppm (260 mg/m3) ST 250 ppm (325 mg/m3) [skin][9] | ||
IDLH (Immediate danger) |
6000 ppm[9] | ||
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). | |||
Y verify (whit is YN ?) | |||
Infobox references | |||
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