Reference Source

Epichlorohydrin — CAS 106-89-8 — workplace exposure limit

What is the pel (ppm) for Epichlorohydrin — CAS 106-89-8 — workplace exposure limit?

For Epichlorohydrin, pel (ppm) is disputed: 5 per osha.gov, 0.05 per dir.ca.gov; pel (mg/m³) is disputed: 19 per osha.gov, 0.19 per dir.ca.gov; cas no. is 106-89-8, verified against its source on 2026-08-05.

Epichlorohydrin | 106-89-8 | 5 | 19 | X |

— osha.gov, retrieved 2026-08-05

5
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
Sourceosha.gov
Verified
Review by
DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side
Substance
Epichlorohydrin verified
CAS No.
106-89-8 verified
PEL (ppm)
5 sources disagree
PEL (mg/m³)
19 sources disagree
NIOSH REL, as stated
Ca See Appendix A per cdc.gov

What cdc.gov says

NIOSH REL Ca See Appendix A

— cdc.gov, retrieved 2026-09-08

Substance

CDC - NIOSH Pocket Guide to Chemical Hazards - Epichlorohydrin

CAS No.

CAS No. 106-89-8

What dir.ca.gov says

106898 | | 1-Chloro-2,3-epoxypropane; see Epichlorohydrin

— dir.ca.gov, retrieved 2026-08-05

Sources disagree

More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.

PEL (ppm)

osha.gov says pel (ppm) is 5, as of 2026-08-05.

Epichlorohydrin | 106-89-8 | 5 | 19 | X |

https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

dir.ca.gov says pel (ppm) is 0.05, as of 2026-08-05.

106898 | S | Epichlorohydrin; 1-chloro-2, 3-epoxypropane | 0.05 | 0.19

https://www.dir.ca.gov/title8/5155.html

PEL (mg/m³)

osha.gov says pel (mg/m³) is 19, as of 2026-08-05.

Epichlorohydrin | 106-89-8 | 5 | 19 | X |

https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

dir.ca.gov says pel (mg/m³) is 0.19, as of 2026-08-05.

106898 | S | Epichlorohydrin; 1-chloro-2, 3-epoxypropane | 0.05 | 0.19

https://www.dir.ca.gov/title8/5155.html

Sources

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.

What is the OSHA exposure limit for this substance?Find the exposure limit for a substance in workplace air — federal OSHA, California and NIOSH, side by side.