NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

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

Exposure
Limits

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. See: IDLH INDEX
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
OSHA PV2012
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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
Not available.
Important additional information about respirator selection
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
See also: INTRODUCTION   See ICSC CARD: 0118