Pentan-3-one
A symmetrical ketone useful for comparing structure and reduction products.
- Formula
- C5H10O
- Functional group
- Ketones
- Molar mass
- 86.13 g/mol
- Also known as
- 3-PENTANONE, Diethyl ketone, Dimethylacetone, Methacetone, Propione, Metacetone
Overview
A symmetrical ketone useful for comparing structure and reduction products.
Two equivalent ethyl groups flank the carbonyl. Reduction produces pentan-3-ol, but the OH-bearing carbon is not a stereogenic centre because those two substituents remain identical. This comparison with butan-2-one separates carbonyl reduction from the additional question of chirality.
Identifiers
- Formula
- C5H10O
- Functional group
- Ketones
- Molar mass
- 86.13 g/mol
- Also known as
- 3-PENTANONE, Diethyl ketone, Dimethylacetone, Methacetone, Propione, Metacetone
Chemical identifiers
- SMILES
- CCC(=O)CC
- InChI
- InChI=1S/C5H10O/c1-3-5(6)4-2/h3-4H2,1-2H3
- PubChem CID
- 7288
Properties
- Melting Point
- -39 °C
- Boiling Point
- 101.7 °C
- Density
- 0.8098 g/cu cm at 25 °C
- Water solubility
- In water, 4.589X10+4 mg/L at 25 °C
Related compounds
- Ketones
A symmetrical ketone useful for comparing structure and reduction products.
References
- PubChem Compound Summary: Pentan-3-one (CID 7288)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.
- OpenStax Organic Chemistry: Nucleophilic addition of hydride and Grignard reagents: alcohol formationJohn McMurry · OpenStax · 2023
Supports the qualitative structural interpretation of the recorded molecular structure; no new physical measurement or verified preparative yield is claimed.
- Hazardous Substances Data Bank (HSDB): Pentan-3-one — melting pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7288#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-416
- Hazardous Substances Data Bank (HSDB): Pentan-3-one — boiling pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7288#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-416
- Hazardous Substances Data Bank (HSDB): Pentan-3-one — densityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7288#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-416
- Hazardous Substances Data Bank (HSDB): Pentan-3-one — solubilityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7288#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky, S.H., He, Yan., Handbook of Aqueous Solubility Data: An Extensive Compilation of Aqueous Solubility Data for Organic Compounds Extracted from the AQUASOL dATAbASE. CRC Press LLC, Boca Raton, FL. 2003., p. 163