Methylene bisphenyl isocyanate — workplace exposure limit
What is the niosh rel (ppm) for Methylene bisphenyl isocyanate — workplace exposure limit?
For Methylene bisphenyl isocyanate, niosh rel (ppm) is 0.005; niosh rel (mg/m³) is TWA 0.05; cas no. is 101-68-8, verified against its source on 2026-09-08.
NIOSH REL TWA 0.05 mg/m3 (0.005 ppm) C 0.2 mg/m3 (0.020 ppm) [10-minute]
— cdc.gov, retrieved 2026-09-08
- Substance
- Methylene bisphenyl isocyanate verified
- CAS No.
- 101-68-8 verified
- NIOSH REL (ppm)
- 0.005 verified
- NIOSH REL (mg/m³)
- TWA 0.05 verified
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Methylene bisphenyl isocyanate
CAS No.
CAS No. 101-68-8
— all from cdc.gov, retrieved 2026-09-08
Source
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0413.html