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Green methanol

CH3OH; simplest possible alcoholA sample of methanolNames Preferred IUPAC nameMethanolOther names CarbinolColumbian spirits HydroxymethaneMethyl alcoholMethyl hydrateMethyl hydroxideMethylic alcoholMethylolMethylene hydrate, primary alcoholPyroligneous spiritWood alcoholWood naphthaWood spiritIdentifiers CAS Number67-56-13D model (JSmol)Interactive imageAbbreviations MeOH Beilstein Reference1098229 ChEBICHEBI:17790ChEMBLChEMBL14688ChemSpider864ECHA InfoCard100.000.599EC Number200-659-6Gmelin Reference449 KEGGD02309MeSHMethanolPubChemCID887RTECS numberPC1400000UNIIY4S76JWI15UN number1230 CompTox Dashboard(EPA)DTXSID2021731InChIInChI=1S/CH4O/c1-2/h2H,1H3Key: OKKJLVBELUTLKV-UHFFFAOYSA-NInChI=1/CH4O/c1-2/h2H,1H3Key: OKKJLVBELUTLKV-UHFFFAOYAXSMILESCOProperties Chemical formulaCH3OH Molar mass32.042 g·mol Appearance Colourless liquid OdorFaint and similar to ethanol Density0.792 g/cm Melting point−97.6 °C (−143.7 °F; 175.6 K) Boiling point64.7 °C (148.5 °F; 337.8 K) Solubility in watermisciblelog P−0.69 Vapor pressure13.02 kPa (at 20 °C) Acidity (pKa) 15.5 Conjugate acidMethyloxonium Conjugate baseMethanolateMagnetic susceptibility (χ)−21.40·10 cm/mol Refractive index (nD)1.33141 Viscosity0.545 mPa·s (at 25 °C) Dipole moment1.69 D Thermochemistry Heat of combustion, higher value (HHV)725.7 kJ/mol, 173.4 kcal/mol, 5.77 kcal/g Hazards Occupational safety and health (OHS/OSH): Main hazardsMethanol and its vapours are flammable.Moderately toxic for small animals – Highly toxic to large animals and humans (in high concentrations) – May be fatal/lethal or cause blindness and damage to the liver, kidneys, and heart if swallowed – Toxicity effects from repeated over exposure have an accumulative effect on the central nervous system, especially the optic nerve – Symptoms may be delayed, become severe after 12 to 18 hours, and linger for several days after exposure GHS labelling: PictogramsSignal wordDangerHazard statementsH225, H301, H302, H305, H311, H331, H370Precautionary statementsP210, P233, P235, P240, P241, P242, P243, P260, P264, P270, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P307+P311, P310, P311, P312, P337+P313, P361, P363, P370+P378, P403+P233, P405, P501NFPA 704 (fire diamond) 130Flash point11 to 12 °C (52 to 54 °F; 284 to 285 K) Autoignitiontemperature470 °C (878 °F; 743 K)385 °C (725 °F; 658 K)Explosive limits6–36% Lethal dose or concentration (LD, LC): LD50 (median dose)5628 mg/kg (rat, oral)7300 mg/kg (mouse, oral)12880 mg/kg (rat, oral)14200 mg/kg (rabbit, oral) LC50 (median concentration)64,000 ppm (rat, 4 h) LCLo (lowest published)33,082 ppm (cat, 6 h)37,594 ppm (mouse, 2 h) NIOSH (US health exposure limits): PEL (Permissible)TWA 200 ppm (260 mg/m) REL (Recommended)TWA 200 ppm (260 mg/m) ST 250 ppm (325 mg/m) [skin] IDLH (Immediate danger)6000 ppm Safety data sheet (SDS) [1]Related compounds Related compoundsMethanethiolSilanolEthanolSupplementary data page Methanol (data page)Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).N verify ( ?)

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