Stearic acid
Stearic acid is an organic compound with the molecular formula C18H36O2.
- Formula
- C18H36O2
- Functional group
- Carboxylic acids
- Molar mass
- 284.5 g/mol
- Also known as
- octadecanoic acid, n-Octadecanoic acid, Stearophanic acid, Stearex Beads, 1-Heptadecanecarboxylic acid, Pearl stearic
Overview
Stearic acid is an organic compound with the molecular formula C18H36O2.
Identifiers
- Formula
- C18H36O2
- Functional group
- Carboxylic acids
- Molar mass
- 284.5 g/mol
- Also known as
- octadecanoic acid, n-Octadecanoic acid, Stearophanic acid, Stearex Beads, 1-Heptadecanecarboxylic acid, Pearl stearic
Chemical identifiers
- SMILES
- CCCCCCCCCCCCCCCCCC(=O)O
- InChI
- InChI=1S/C18H36O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H,19,20)
- PubChem CID
- 5281
Properties
- Melting Point
- 69.3 °C
- Boiling Point
- 371 °C
- Density
- 0.9408 g/cu cm at 20 °C
- Water solubility
- In water, 0.568 mg/L at 25 °C
Related compounds
- Carboxylic acids
Stearic acid is an organic compound with the molecular formula C18H36O2.
References
- PubChem Compound Summary: Stearic acid (CID 5281)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): Stearic acid — melting pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5281#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. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-488
- Hazardous Substances Data Bank (HSDB): Stearic acid — boiling pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5281#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. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-488
- Hazardous Substances Data Bank (HSDB): Stearic acid — densityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5281#section=Density. 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. 95th Edition. CRC Press LLC, Boca Raton: FL 2014-2015, p. 3-488
- Hazardous Substances Data Bank (HSDB): Stearic acid — solubilityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5281#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Robb ID; Aust J Chem 19: 2281-84 (1966)