β-PROPIOLACTONE‡

Chemical Identification
Chemical Identification
CAS # 57-57-8
Formula

C₃H₄O₂

Synonyms

BPL; hydroacrylic acid, β-lactone; 3-hydroxy-β-lactone; 3-hydroxy-propionic acid; β-lactone; 2-oxetanone; 3-propiolacetone

Physical Properties
Physical Properties
Physical description Colorless liquid with a slightly sweet odor.
Boiling point 323°F (decomposes) Molecular weight 72.1
Freezing point/melting point -28°F Vapor pressure 3 mmHg at 77°F
Flash point 165°F Vapor density 2.5
Specific gravity 1.15 Ionization potential
Lower explosive limit (LEL) 2.9% Upper explosive limit (UEL)
NFPA health rating 0 NFPA fire rating 2
NFPA reactivity rating 0 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.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
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

Ca

REL-TWA TLV-TWA

0.5 ppm [1992]

PEL-TWA

0.5 ppm (1.5 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1003, 13 Carcinogens.

Notes:

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A.

Notes: Notes:

See California Code of Regulations, Title 8, Section 5209. Carcinogens.

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, OSHA-Ca, TLV-A3 Notes:

Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - β-Propiolactone

NIOSH: Pocket Guide to Chemical Hazards - β-Propiolactone

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - β-Propiolactone. See annual publication for most recent information.

Last Updated Date : 01/28/2021