---
type: threshold
id: ethyl-silicate-tetraethyl-silicate
asset: workplace-exposure-limits
title: "Ethyl silicate; tetraethyl silicate — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "78104 | | Ethyl silicate; tetraethyl silicate | 10 | 85"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Ethyl silicate; tetraethyl silicate"
pel_ppm: "10"
pel_mgm3: "85"
verified: true
---
**Substance:** Ethyl silicate; tetraethyl silicate

**PEL (ppm):** 10

**PEL (mg/m³):** 85

> 78104 | | Ethyl silicate; tetraethyl silicate | 10 | 85

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