Caprolactam

CAS Number

105-60-2

Synonym

Aminocaproic lactam; epsilon-Caprolactam; Hexahydro-2H-azepin-2-one; 2-Oxohexamethylenimine; 2-Ketohexamethylenimine

Occurrence/Use

Monomer used in manufacture of synthetic fibers and resins (Nylon 6) used in carpets, rugs, textiles, engineering plastics, tire cord, and plastic film

Caprolactam

Cancer Potency Information

Latest Criteria: Reference Exposure Levels

Air

Acute RELs

Acute REL (μg/m3): 50
Species: Human
Acute REL Toxicologic Endpoint: Increased blink frequency in humans
Acute REL Target Organs: Eyes
Severity: Mild
Last Acute REL Revision: 2013
Acute Reference Exposure Levels Comments:

OEHHA 2013. Reference Exposure Levels for Caprolactam

8-Hour RELs

8-Hour Inhalation REL (μg/m3): 7
Last 8-Hour REL Revision: 2013
8-Hour Reference Exposure Levels Comments:

OEHHA 2013. Technical Support Document for Noncancer RELs, Appendix D1. Updated July 2014.

Chronic REL

Chronic Inhalation REL (μg/m3): 2.2
Chronic Target Organs: Upper respiratory system
Human Data: No
Last Chronic REL Revision: 2013
Chronic Reference Exposure Levels Comments:

OEHHA 2013. Reference Exposure Levels for Caprolactam