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.

Methanol
Skeletal formula o methanol wi some explicit hydrogens addit
Skeletal formula o methanol wi some explicit hydrogens addit
Spacefill model o methanol
Spacefill model o methanol
Stereo skeletal formula o methanol wi aw explicit hydrogen addit
Stereo skeletal formula o methanol wi aw explicit hydrogen addit
Baw an stick model o methanol
Baw an stick model o methanol
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)
3DMetB01170
Beilstein Reference
1098229
ChEBI
ChEMBL
ChemSpider
EC Nummer200-659-6
Gmelin Reference449
KEGG
MeSHMethanol
RTECS nummerPC1400000
UNII
UN nummer1230
Properties
CH
3
OH
Molar mass32.04 g mol−1
AppearanceColourless liquid
Density0.792 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 pressur13.02 kPa (at 20 °C)
Acidity (pKa)15.5[3]
Magnetic susceptibility-21.40·10−6 cm3/mol
Refractive index (nD)1.33141[4]
Viscosity0.545 mPa×s (at 25 °C) [5]
Dipole moment
1.69 D
Hazards[10]
GHS pictogramsThe flame pictogram in the Globally Harmonized Seestem o Classification an Labelling o Chemicals (GHS) The skull-an-crossbones pictogram in the Globally Harmonized Seestem o Classification an Labellin o Chemicals (GHS) The health hazard pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS)[6]
GHS signal wirdDanger [6]
GHS hazard statementsH225, H301, H311, H331, H370[6]
GHS precautionary statementsP210, P233, P240, P241, P242, P243, P260, P264, P270, P280, P301+310, P303+361+353, P304+340, P330[6]
NFPA 704
NFPA 704 four-colored diamondFlammability code 3: Liquids an solids that can be ignited unner awmaist ae ambient temperature condeetions. Flash pynt atween 23 an 38 °C (73 an 100 °F). E.g., gasoline)Health code 3: Short exposur could cause serious temporary or residual injury. E.g., chlorine gasReactivity code 0: Normally stable, even unner fire exposur condeetions, an is nae reactive wi watter. E.g., liquid nitrogenSpecial hazards (white): no code
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 leemits6%-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).
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Infobox references

References