---
type: threshold
id: methyl-silicate-tetramethyl-silicate
asset: workplace-exposure-limits
title: "Methyl silicate; tetramethyl 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: "681845 | | Methyl silicate; tetramethyl silicate | 1 | 6"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Methyl silicate; tetramethyl silicate"
pel_ppm: "1"
pel_mgm3: "6"
verified: true
---
**Substance:** Methyl silicate; tetramethyl silicate

**PEL (ppm):** 1

**PEL (mg/m³):** 6

> 681845 | | Methyl silicate; tetramethyl silicate | 1 | 6

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