---
type: threshold
id: silica-amorphous-diatomaceous-earth
asset: workplace-exposure-limits
title: "Silica, amorphous Diatomaceous earth — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "61790532 | | Silica, amorphous Diatomaceous earth"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Silica, amorphous Diatomaceous earth"
verified: true
---
**Substance:** Silica, amorphous Diatomaceous earth

> 61790532 | | Silica, amorphous Diatomaceous earth

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