Reference Source

Piperazine dihydrochloride — workplace exposure limit

What is the pel (mg/m³) for Piperazine dihydrochloride — workplace exposure limit?

For Piperazine dihydrochloride, pel (mg/m³) is 5; cas no. is 142643, verified against its source on 2026-08-05.

142643 | | Piperazine dihydrochloride | -- | 5

— dir.ca.gov, retrieved 2026-08-05

Substance
Piperazine dihydrochloride verified
CAS No.
142643 verified
PEL (mg/m³)
5 verified
NIOSH REL (mg/m³)
TWA 5 per cdc.gov
Sourcedir.ca.gov
Verified
Review by
DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side

What cdc.gov says

NIOSH REL TWA 5 mg/m3

— cdc.gov, retrieved 2026-09-08

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.

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