---
type: threshold
id: toluene-2-4-diisocyanate-tdi
asset: workplace-exposure-limits
title: "Toluene-2,4-diisocyanate (TDI) — 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: "Toluene-2,4-diisocyanate (TDI) | 584-84-9 | (C)0.02 | (C)0.14 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Toluene-2,4-diisocyanate (TDI)"
cas_number: "584-84-9"
pel_ppm: "(C)0.02"
pel_mgm3: "(C)0.14"
verified: true
---
**Substance:** Toluene-2,4-diisocyanate (TDI)

**CAS No.:** 584-84-9

**PEL (ppm):** (C)0.02

**PEL (mg/m³):** (C)0.14

> Toluene-2,4-diisocyanate (TDI) | 584-84-9 | (C)0.02 | (C)0.14 | - |

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