Methanoic acid
Methanoic acid is an organic compound with the molecular formula CH2O2.
- Formula
- CH2O2
- Functional group
- Carboxylic acids
- Molar mass
- 46.025 g/mol
- Also known as
- formic acid, Formylic acid, Aminic acid, Bilorin, Hydrogen carboxylic acid, Formisoton
Overview
Methanoic acid is an organic compound with the molecular formula CH2O2.
Identifiers
- Formula
- CH2O2
- Functional group
- Carboxylic acids
- Molar mass
- 46.025 g/mol
- Also known as
- formic acid, Formylic acid, Aminic acid, Bilorin, Hydrogen carboxylic acid, Formisoton
Chemical identifiers
- SMILES
- C(=O)O
- InChI
- InChI=1S/CH2O2/c2-1-3/h1H,(H,2,3)
- PubChem CID
- 284
Properties
- Melting Point
- 8.3 °C
- Boiling Point
- 101 °C
- Relative density (water = 1)
- Relative density (water = 1): 1.2 (20 °C)
- Water solubility
- Miscible with water
Related compounds
- Carboxylic acids
Methanoic acid is an organic compound with the molecular formula CH2O2.
Connected reactions
- Aldehyde oxidation: Methanal → Methanoic acid
Oxidation changes the aldehyde hydrogen into acid functionality through the hydrated carbonyl. The carbon count stays at one, but further oxidation remains possible.
References
- PubChem Compound Summary: Methanoic acid (CID 284)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.
- Hazardous Substances Data Bank (HSDB): Methanoic acid — melting pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/284#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 3-262
- Hazardous Substances Data Bank (HSDB): Methanoic acid — boiling pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/284#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 3-262
- ILO-WHO International Chemical Safety Cards (ICSCs): Methanoic acid — densityILO-WHO International Chemical Safety Cards (ICSCs)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/284#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.
- Hazardous Substances Data Bank (HSDB): Methanoic acid — solubilityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/284#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Riddick, J.A., W.B. Bunger, Sakano T.K. Techniques of Chemistry 4th ed., Volume II. Organic Solvents. New York, NY: John Wiley and Sons., 1985., p. 360