Naphthalene diisocyanate — workplace exposure limit
What is the niosh rel (ppm) for Naphthalene diisocyanate — workplace exposure limit?
For Naphthalene diisocyanate, niosh rel (ppm) is 0.005; niosh rel (mg/m³) is TWA 0.040; cas no. is 3173-72-6, verified against its source on 2026-09-08.
NIOSH REL TWA 0.040 mg/m3 (0.005 ppm) C 0.170 mg/m3 (0.020 ppm) [10-minute]
— cdc.gov, retrieved 2026-09-08
- Substance
- Naphthalene diisocyanate verified
- CAS No.
- 3173-72-6 verified
- NIOSH REL (ppm)
- 0.005 verified
- NIOSH REL (mg/m³)
- TWA 0.040 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 - Naphthalene diisocyanate
CAS No.
CAS No. 3173-72-6
— all from cdc.gov, retrieved 2026-09-08
Source
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0440.html