---
type: threshold
id: n-methylpyrrolidone-nmp
asset: workplace-exposure-limits
title: "N-Methylpyrrolidone (NMP) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "872504 | S | N-Methylpyrrolidone (NMP) | 1 | 4"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "N-Methylpyrrolidone (NMP)"
pel_ppm: "1"
pel_mgm3: "4"
verified: true
---
**Substance:** N-Methylpyrrolidone (NMP)

**PEL (ppm):** 1

**PEL (mg/m³):** 4

> 872504 | S | N-Methylpyrrolidone (NMP) | 1 | 4

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