---
type: threshold
id: caprolactam-vapor
asset: workplace-exposure-limits
title: "Caprolactam vapor — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "105602 | | Caprolactam vapor | 5 | 20 | | 10 | 40"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Caprolactam vapor"
pel_ppm: "5"
pel_mgm3: "20"
stel_ppm: "10"
stel_mgm3: "40"
verified: true
---
**Substance:** Caprolactam vapor

**PEL (ppm):** 5

**PEL (mg/m³):** 20

**STEL (ppm):** 10

**STEL (mg/m³):** 40

> 105602 | | Caprolactam vapor | 5 | 20 | | 10 | 40

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