Ethanolamine — CAS 141-43-5 — workplace exposure limit

What is the pel (ppm) for Ethanolamine — CAS 141-43-5 — workplace exposure limit?

For Ethanolamine, pel (ppm) is 3; pel (mg/m³) is disputed: 6 per osha.gov, 8 per dir.ca.gov; cas no. is 141-43-5, verified against its source on 2026-08-05.

Ethanolamine | 141-43-5 | 3 | 6 | - |

— osha.gov, retrieved 2026-08-05

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

Verified2026-08-05

Review by2027-08-05

DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side

Substance: Ethanolamine verified
CAS No.: 141-43-5 verified
PEL (ppm): 3 verified
PEL (mg/m³): 6 sources disagree
NIOSH REL (ppm): TWA 3 per cdc.gov
NIOSH REL (mg/m³): 8 per cdc.gov
STEL (ppm): 6 per dir.ca.gov
STEL (mg/m³): 15 per dir.ca.gov

What cdc.gov says

NIOSH REL TWA 3 ppm (8 mg/m3) ST 6 ppm (15 mg/m3)

— cdc.gov, retrieved 2026-09-08

Substance

CDC - NIOSH Pocket Guide to Chemical Hazards - Ethanolamine

CAS No.

CAS No. 141-43-5

What dir.ca.gov says

141435 | | 2-Aminoethanol; see Ethanolamine

— 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 (mg/m³)

osha.gov says pel (mg/m³) is 6, as of 2026-08-05.

Ethanolamine | 141-43-5 | 3 | 6 | - |

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

dir.ca.gov says pel (mg/m³) is 8, as of 2026-08-05.

141435 | | Ethanolamine; 2-aminoethanol | 3 | 8 | | 6 | 15

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

Sources

osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
cdc.govhttps://www.cdc.gov/niosh/npg/npgd0256.html
dir.ca.govhttps://www.dir.ca.gov/title8/5155.html

Last verified against source: 2026-08-05. Due for re-check by 2027-08-05. 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.