---
type: threshold
id: tantalum-metal-and-oxide-dust
asset: workplace-exposure-limits
title: "Tantalum, metal and oxide dust — 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: "Tantalum, metal and oxide dust | 7440-25-7 | - | 5 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Tantalum, metal and oxide dust"
cas_number: "7440-25-7"
pel_mgm3: "5"
verified: true
---
**Substance:** Tantalum, metal and oxide dust

**CAS No.:** 7440-25-7

**PEL (mg/m³):** 5

> Tantalum, metal and oxide dust | 7440-25-7 | - | 5 | - |

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