---
type: threshold
id: xylenes-o-m-p-isomers
asset: workplace-exposure-limits
title: "Xylenes (o-, m-, p-isomers) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "Xylenes (o-, m-, p-isomers) | 1330-20-7 | 100 | 435 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Xylenes (o-, m-, p-isomers)"
cas_number: "1330-20-7"
pel_ppm: "100"
pel_mgm3: "435"
verified: true
---
**Substance:** Xylenes (o-, m-, p-isomers)

**CAS No.:** 1330-20-7

**PEL (ppm):** 100

**PEL (mg/m³):** 435

> Xylenes (o-, m-, p-isomers) | 1330-20-7 | 100 | 435 | - |

Source: <https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1>