NIOSH Pocket Guide to Chemical Hazards

Caprolactam CAS 105-60-2
C2H11NO RTECS CM3675000
Synonyms & Trade Names
Aminocaproic lactam, epsilon-Caprolactam, Hexahydro-2H-azepin-2-one, 2-Oxohexamethyleneimine
DOT ID & Guide
NIOSH REL: Dust: TWA 1 mg/m3 ST 3 mg/m3 Vapor: TWA 0.22 ppm (1 mg/m3) ST 0.66 ppm (3 mg/m3)
OSHA PEL†: none
IDLH N.D. Conversion 1 ppm = 4.63 mg/m3
Physical Description
White, crystalline solid or flakes with an unpleasant odor. [Note: Significant vapor concentrations would be expected only at elevated temperatures.]
MW: 113.2
BP: 515°F
MLT: 156°F
Sol: 53%
VP: 0.00000008 mmHg
IP: ?

Sp.Gr: 1.01
Fl.P: 282°F
UEL: 8.0%
LEL: 1.4%

Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers, (acetic acid + dinitrogen trioxide)
Measurement Methods
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation skin, eyes, respiratory system; epistaxis (nosebleed); dermatitis, skin sensitization; asthma; irritability, confusion, dizziness, headache; abdominal cramps, diarrhea, nausea, vomiting; liver, kidney injury
Target Organs Eyes, skin, respiratory system, central nervous system, cardiovascular system, liver, kidneys