H

Hexanoic acid

IUPAC: hexanoic acid

C6H12O2 Acids CAS 142-62-1
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Quick Reference
Formula / NotationC6H12O2
CAS Number142-62-1
Molecular Weight116.16
Melting Point27 °F (NTP, 1992)
Boiling Point396 to 397 °F at 760 mmHg (NTP, 1992)
Density0.927 (USCG, 1999) - Less dense than water; will float
Solubility5 to 10 mg/mL at 72 °F (NTP, 1992)
AppearanceCaproic acid appears as a white crystalline solid or colorless to light yellow solution with an unpleasant odor. Insoluble to slightly soluble in water and less dense than water. Contact may severe...
Also Known AsCaproic acid; 142-62-1; n-Hexanoic acid; n-Caproic acid; Capronic acid; 1-Hexanoic acid; Hexoic acid; Butylacetic acid; Pentylformic acid; n-Hexylic acid
CategoryAcids

What is Hexanoic acid?

Hexanoic acid is a C6, straight-chain saturated fatty acid. It has a role as a plant metabolite and a human metabolite. It is a straight-chain saturated fatty acid and a medium-chain fatty acid. It is a conjugate acid of a hexanoate.

Formula & Notation

C6H12O2

IUPAC Name: hexanoic acid

Other Names / Synonyms: Caproic acid; 142-62-1; n-Hexanoic acid; n-Caproic acid; Capronic acid; 1-Hexanoic acid; Hexoic acid; Butylacetic acid; Pentylformic acid; n-Hexylic acid

Properties & Characteristics

Appearance: Caproic acid appears as a white crystalline solid or colorless to light yellow solution with an unpleasant odor. Insoluble to slightly soluble in water and less dense than water. Contact may severe.... Molecular formula: C6H12O2. Molecular weight: 116.16 g/mol. Boiling point: 396 to 397 °F at 760 mmHg (NTP, 1992). Melting point: 27 °F (NTP, 1992). Density: 0.927 (USCG, 1999) - Less dense than water; will float. Solubility: 5 to 10 mg/mL at 72 °F (NTP, 1992). Vapor pressure: 0.2 mmHg at 68 °F ; 1 mmHg at 158 °F; 20 mmHg at 233.2 °F (NTP, 1992). LogP: 1.9.

Physical Data

PropertyValue
Melting Point27 °F (NTP, 1992)
Boiling Point396 to 397 °F at 760 mmHg (NTP, 1992)
Density0.927 (USCG, 1999) - Less dense than water; will float
Molecular Weight116.16
Solubility5 to 10 mg/mL at 72 °F (NTP, 1992)
AppearanceCaproic acid appears as a white crystalline solid or colorless to light yellow solution with an unpleasant odor. Insoluble to slightly soluble in water and less dense than water. Contact may severe...

Uses & Applications

Used in industrial chemical synthesis, fertilizer production, battery electrolytes, metal processing, and laboratory acid-base reactions.

Safety Information

Corrosive. Causes severe burns to skin, eyes, and respiratory tract. Wear appropriate PPE including gloves, goggles, and lab coat. Consult SDS before use.

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

Key Facts

Term Hexanoic acid
Formula C6H12O2
CAS Number 142-62-1
Molecular Weight 116.16
Category Acids
Synonyms Caproic acid; 142-62-1; n-Hexanoic acid; n-Caproic acid; Capronic acid; 1-Hexanoic acid; Hexoic acid; Butylacetic acid; Pentylformic acid; n-Hexylic acid

Frequently Asked Questions

Hexanoic acid is a C6, straight-chain saturated fatty acid. It has a role as a plant metabolite and a human metabolite. It is a straight-chain saturated fatty acid and a medium-chain fatty acid. It is a conjugate acid of a hexanoate.

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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.