---
type: threshold
id: trimethylamine
asset: workplace-exposure-limits
title: "Trimethylamine — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "75503 | | Trimethylamine | 5 | 12 | | 15 | 36"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Trimethylamine"
pel_ppm: "5"
pel_mgm3: "12"
stel_ppm: "15"
stel_mgm3: "36"
verified: true
---
**Substance:** Trimethylamine

**PEL (ppm):** 5

**PEL (mg/m³):** 12

**STEL (ppm):** 15

**STEL (mg/m³):** 36

> 75503 | | Trimethylamine | 5 | 12 | | 15 | 36

Source: <https://www.dir.ca.gov/title8/5155.html>