---
type: threshold
id: methyl-isobutyl-carbinol-4-methyl-2-pentanol-methyl-amyl-alcohol
asset: workplace-exposure-limits
title: "Methyl isobutyl carbinol; 4-methyl-2-pentanol; methyl amyl alcohol — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "108112 | S | Methyl isobutyl carbinol; 4-methyl-2-pentanol; methyl amyl alcohol | 25 | 100 | | 40 | 165"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Methyl isobutyl carbinol; 4-methyl-2-pentanol; methyl amyl alcohol"
pel_ppm: "25"
pel_mgm3: "100"
stel_ppm: "40"
stel_mgm3: "165"
verified: true
---
**Substance:** Methyl isobutyl carbinol; 4-methyl-2-pentanol; methyl amyl alcohol

**PEL (ppm):** 25

**PEL (mg/m³):** 100

**STEL (ppm):** 40

**STEL (mg/m³):** 165

> 108112 | S | Methyl isobutyl carbinol; 4-methyl-2-pentanol; methyl amyl alcohol | 25 | 100 | | 40 | 165

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