# Calcium silicate (synthetic): see Particulates not otherwise regulated — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Calcium silicate (synthetic): see Particulates not otherwise regulated, substance is Calcium silicate (synthetic): see Particulates not otherwise regulated, verified against its source on 2026-08-05.

- **Substance:** Calcium silicate (synthetic): see Particulates not otherwise regulated

## What the source says

> 1344952 | | Calcium silicate (synthetic): see Particulates not otherwise regulated

## 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/).