Pent-1-ene
A five-carbon terminal alkene distinct from the pent-2-ene stereoisomers.
- Formula
- C5H10
- Functional group
- Alkenes
- Molar mass
- 70.13 g/mol
- Also known as
- 1-PENTENE, Propylethylene, alpha-Amylene, alpha-n-Amylene, 1-Pentylene
Overview
A five-carbon terminal alkene distinct from the pent-2-ene stereoisomers.
Moving the double bond along the chain changes connectivity. Pent-1-ene itself has no E/Z pair because one double-bond carbon bears two hydrogens. Its terminal double bond remains reactive toward electrophilic addition despite the absence of geometric isomerism.
Identifiers
- Formula
- C5H10
- Functional group
- Alkenes
- Molar mass
- 70.13 g/mol
- Also known as
- 1-PENTENE, Propylethylene, alpha-Amylene, alpha-n-Amylene, 1-Pentylene
Chemical identifiers
- SMILES
- CCCC=C
- InChI
- InChI=1S/C5H10/c1-3-5-4-2/h3H,1,4-5H2,2H3
- PubChem CID
- 8004
Properties
- Melting Point
- -165.2 °C
- Boiling Point
- 29.9 °C
- Water solubility
- In water, 148 mg/l @ 25 °C
Data availability
Not published: Density.
Related compounds
- Alkenes
A five-carbon terminal alkene distinct from the pent-2-ene stereoisomers.
References
- PubChem Compound Summary: Pent-1-ene (CID 8004)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.
- OpenStax Organic Chemistry: Cis–trans isomerism in alkenesJohn McMurry · OpenStax · 2023
Supports the qualitative structural interpretation of the recorded molecular structure; no new physical measurement or verified preparative yield is claimed.
- OpenStax Organic Chemistry: Halogenation of alkenes: addition of X2John McMurry · OpenStax · 2023
Supports the qualitative structure and reactivity context; identity and numerical measurements retain their original references.
- Hazardous Substances Data Bank (HSDB): Pent-1-ene — melting pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8004#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. (ed.). CRC Handbook of Chemistry and Physics. 79th ed. Boca Raton, FL: CRC Press Inc., 1998-1999., p. 3-247
- Hazardous Substances Data Bank (HSDB): Pent-1-ene — boiling pointHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8004#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. (ed.). CRC Handbook of Chemistry and Physics. 79th ed. Boca Raton, FL: CRC Press Inc., 1998-1999., p. 3-247
- Hazardous Substances Data Bank (HSDB): Pent-1-ene — solubilityHazardous Substances Data Bank (HSDB)
Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/8004#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky SH, Dannenfelser RM; The AQUASOL dATAbASE of Aqueous Solubility. Fifth ed, Tucson, AZ: Univ AZ, College of Pharmacy (1992)