Caprolactam
CAS 105-60-2C6H11NO113.16 g/mol
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.
IUPAC: azepan-2-one
PubChem
Physical & Chemical Properties
| Melting Point | 156 °F (NTP, 1992) |
| Boiling Point | 512.4 °F at 760 mmHg (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) |
| Flash Point | 257 °F (NTP, 1992) |
| Vapor Pressure | 0.001 mmHg at 68 °F ; 3 mmHg at 212 °F (NTP, 1992) |
| 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 primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. As a liquid it can easily penetrate the soil and contaminate groundwater and nearby streams. Used to make other chemicals. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2933
Data: UN Comtrade
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