---
type: threshold
id: iron-oxide-fume
asset: workplace-exposure-limits
title: "Iron oxide fume — 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: "Iron oxide fume | 1309-37-1 | - | 10 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Iron oxide fume"
cas_number: "1309-37-1"
pel_mgm3: "10"
verified: true
---
**Substance:** Iron oxide fume

**CAS No.:** 1309-37-1

**PEL (mg/m³):** 10

> Iron oxide fume | 1309-37-1 | - | 10 | - |

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