C

Caprolactam

IUPAC: azepan-2-one

C6H11NO Organic Compounds CAS 105-60-2
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Quick Reference
Formula / NotationC6H11NO
CAS Number105-60-2
Molecular Weight113.16
Melting Point156 °F (NTP, 1992)
Boiling Point512.4 °F at 760 mmHg (NTP, 1992)
Density1.02 at 170.6 °F (USCG, 1999) - Denser than water; will sink
Solubilitygreater than or equal to 100 mg/mL at 68.9 °F (NTP, 1992)
AppearanceCaprolactam is a clear to milky white-colored solution with a mild, disagreeable odor. Contact may cause slight irritation to skin, eyes, and mucous membranes. May be mildly toxic by ingestion. The...
Also Known Asazepan-2-one; 105-60-2; epsilon-Caprolactam; 2-Oxohexamethylenimine; 6-Caprolactam; Aminocaproic lactam; Hexahydro-2H-azepin-2-one; 6-Hexanelactam; 2-Oxohexamethyleneimine; 2-Azacycloheptanone
CategoryOrganic Compounds

What is Caprolactam?

Epsilon-caprolactam is a member of the class of caprolactams that is azepane substituted by an oxo group at position 2. It has a role as a human blood serum metabolite.

Formula & Notation

C6H11NO

IUPAC Name: azepan-2-one

Other Names / Synonyms: azepan-2-one; 105-60-2; epsilon-Caprolactam; 2-Oxohexamethylenimine; 6-Caprolactam; Aminocaproic lactam; Hexahydro-2H-azepin-2-one; 6-Hexanelactam; 2-Oxohexamethyleneimine; 2-Azacycloheptanone

Properties & Characteristics

Appearance: Caprolactam is a clear to milky white-colored solution with a mild, disagreeable odor. Contact may cause slight irritation to skin, eyes, and mucous membranes. May be mildly toxic by ingestion. The.... Molecular formula: C6H11NO. Molecular weight: 113.16 g/mol. Boiling point: 512.4 °F at 760 mmHg (NTP, 1992). Melting point: 156 °F (NTP, 1992). Density: 1.02 at 170.6 °F (USCG, 1999) - Denser than water; will sink. Solubility: greater than or equal to 100 mg/mL at 68.9 °F (NTP, 1992). Vapor pressure: 0.001 mmHg at 68 °F ; 3 mmHg at 212 °F (NTP, 1992). LogP: -0.1.

Physical Data

PropertyValue
Melting Point156 °F (NTP, 1992)
Boiling Point512.4 °F at 760 mmHg (NTP, 1992)
Density1.02 at 170.6 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight113.16
Solubilitygreater than or equal to 100 mg/mL at 68.9 °F (NTP, 1992)
AppearanceCaprolactam is a clear to milky white-colored solution with a mild, disagreeable odor. Contact may cause slight irritation to skin, eyes, and mucous membranes. May be mildly toxic by ingestion. The...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

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

Key Facts

Term Caprolactam
Formula C6H11NO
CAS Number 105-60-2
Molecular Weight 113.16
Synonyms azepan-2-one; 105-60-2; epsilon-Caprolactam; 2-Oxohexamethylenimine; 6-Caprolactam; Aminocaproic lactam; Hexahydro-2H-azepin-2-one; 6-Hexanelactam; 2-Oxohexamethyleneimine; 2-Azacycloheptanone

Frequently Asked Questions

Epsilon-caprolactam is a member of the class of caprolactams that is azepane substituted by an oxo group at position 2. It has a role as a human blood serum metabolite.

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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.