1. OSHA Occupational Chemical Database
  2. CAPROLACTAM
Label abbreviations descriptions

CAPROLACTAM

Chemical Identification
Chemical Identification
CAS # 105-60-2
Formula

C₆H₁₁NO
Synonyms

aminocaproic lactam; epsilon-caprolactam; hexahydro-2H-azepin-2-one; 2-oxohexamethyleneimine
Physical Properties
Physical Properties
Physical description Clear to milky white-colored solution with a mild, disagreeable odor.
Boiling point 515°F Molecular weight 113.2
Freezing point/melting point 156°F Vapor pressure 0.00000008 mmHg
Flash point 282°F Vapor density 3.91
Specific gravity 1.02 Ionization potential
Lower explosive limit (LEL) 1.4% Upper explosive limit (UEL) 8.0%
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0523 (dust and particulate) 0524 (vapor)
Sampling group
Sampler/Sampling media OSHA versatile sampler (OVS-7) - 13 mm XAD-7 tube (200/100 mg) with GFF enclosed [SKC 226-57] OSHA versatile sampler (OVS-7) - 13 mm XAD-7 tube (200/100 mg) with GFF enclosed [SKC 226-57]
Sampling time*

100 min

100 min
Sampling volume (TWA)*

100 L

100 L
Sampling flow rate (TWA)*

1 L/min

1 L/min
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments HPLC-UV HPLC-UV
Method reference OSHA PV2012 (partially validated) OSHA PV2012 (partially validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA REL-TWA

1 mg/m³ (dust), 0.22 ppm (1 mg/m³) (vapor)

 TLV-TWA

5 mg/m³ (inhalable fraction and vapor) [1997]

 PEL-TWA

1 mg/m³ [dust], 5 ppm (20 mg/m³) [vapor]
PEL-STEL REL-STEL TLV-STEL PEL-STEL

3 mg/m³ [dust], 10 ppm (40 mg/m³) [vapor]
PEL-C REL-C TLV-C PEL-C
Skin notation

NA

 Skin notation

N

 Skin notation

N

 Skin notation

N
Notes:

Not established

 Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: IARC-4, TLV-A5 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Caprolactam

NIOSH: Pocket Guide to Chemical Hazards - Caprolactam

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Caprolactam. See annual publication for most recent information.
  • U.S. EPA Integrated Risk Information System: Caprolactam (CASRN 105-60-2).
  • EPA Air Toxics Website: Caprolactam. U.S. Environmental Protection Agency Technology Transfer Network.

Last Updated Date : 01/28/2021