M

Methanol

IUPAC: methanol

CH4O Organic Compounds CAS 67-56-1
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Quick Reference
Formula / NotationCH4O
CAS Number67-56-1
Molecular Weight32.042
Melting Point-144 °F (NTP, 1992)
Boiling Point148.3 °F at 760 mmHg (NTP, 1992)
Density0.792 at 68 °F (USCG, 1999) - Less dense than water; will float
Solubilitygreater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
AppearanceMethanol appears as a colorless fairly volatile liquid with a faintly sweet pungent odor like that of ethyl alcohol. Completely mixes with water. The vapors are slightly heavier than air and may tr...
Also Known Asmethyl alcohol; 67-56-1; wood alcohol; Methylol; Wood naphtha; Methyl hydroxide; Monohydroxymethane; Methylalkohol; Alcool methylique; Methyl hydrate
CategoryOrganic Compounds

What is Methanol?

Methanol can cause developmental toxicity according to The National Toxicology Program.

Formula & Notation

CH4O

IUPAC Name: methanol

Other Names / Synonyms: methyl alcohol; 67-56-1; wood alcohol; Methylol; Wood naphtha; Methyl hydroxide; Monohydroxymethane; Methylalkohol; Alcool methylique; Methyl hydrate

Properties & Characteristics

Appearance: Methanol appears as a colorless fairly volatile liquid with a faintly sweet pungent odor like that of ethyl alcohol. Completely mixes with water. The vapors are slightly heavier than air and may tr.... Molecular formula: CH4O. Molecular weight: 32.042 g/mol. Boiling point: 148.3 °F at 760 mmHg (NTP, 1992). Melting point: -144 °F (NTP, 1992). Density: 0.792 at 68 °F (USCG, 1999) - Less dense than water; will float. Solubility: greater than or equal to 100 mg/mL at 70 °F (NTP, 1992). Vapor pressure: 100 mmHg at 70.2 °F ; 237.87 mmHg at 100 °F (NTP, 1992). LogP: -0.5.

Physical Data

PropertyValue
Melting Point-144 °F (NTP, 1992)
Boiling Point148.3 °F at 760 mmHg (NTP, 1992)
Density0.792 at 68 °F (USCG, 1999) - Less dense than water; will float
Molecular Weight32.042
Solubilitygreater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
AppearanceMethanol appears as a colorless fairly volatile liquid with a faintly sweet pungent odor like that of ethyl alcohol. Completely mixes with water. The vapors are slightly heavier than air and may tr...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Methanol
Formula CH4O
CAS Number 67-56-1
Molecular Weight 32.042
Synonyms methyl alcohol; 67-56-1; wood alcohol; Methylol; Wood naphtha; Methyl hydroxide; Monohydroxymethane; Methylalkohol; Alcool methylique; Methyl hydrate

Frequently Asked Questions

Methanol can cause developmental toxicity according to The National Toxicology Program.

More "M" Terms

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.