# Toluene-2,4-diisocyanate; TDI — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Toluene-2,4-diisocyanate; TDI, pel (ppm) is 0.005; pel (mg/m³) is 0.04; ceiling is 0.02 ppm; stel (ppm) is 0.02; stel (mg/m³) is 0.15, verified against its source on 2026-08-05.

- **Substance:** Toluene-2,4-diisocyanate; TDI
- **PEL (ppm):** 0.005
- **PEL (mg/m³):** 0.04
- **Ceiling:** 0.02 ppm
- **STEL (ppm):** 0.02
- **STEL (mg/m³):** 0.15

## What the source says

> 584849 | | Toluene-2,4-diisocyanate; TDI | 0.005 | 0.04 | 0.02 ppm | 0.02 | 0.15

## Source

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

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).