# Methylene bis(4-cyclohexylisocyanate); hydrogenated MDI — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Methylene bis(4-cyclohexylisocyanate); hydrogenated MDI, pel (ppm) is 0.005; pel (mg/m³) is 0.054, verified against its source on 2026-08-05.

- **Substance:** Methylene bis(4-cyclohexylisocyanate); hydrogenated MDI
- **PEL (ppm):** 0.005
- **PEL (mg/m³):** 0.054

## What the source says

> 5124301 | | Methylene bis(4-cyclohexylisocyanate); hydrogenated MDI | 0.005 | 0.054

## 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/).