Tin(II) oxide (as Sn) — workplace exposure limit
What is the niosh rel (mg/m³) for Tin(II) oxide (as Sn) — workplace exposure limit?
For Tin(II) oxide (as Sn), niosh rel (mg/m³) is TWA 2; cas no. is 21651-19-4, verified against its source on 2026-09-08.
NIOSH REL TWA 2 mg/m3
— cdc.gov, retrieved 2026-09-08
- Substance
- Tin(II) oxide (as Sn) verified
- CAS No.
- 21651-19-4 verified
- NIOSH REL (mg/m³)
- TWA 2 verified
- PEL (mg/m³)
- 2 per dir.ca.gov
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 - Tin(II) oxide (as Sn)
CAS No.
CAS No. 21651-19-4
— all from cdc.gov, retrieved 2026-09-08
What dir.ca.gov says
21651194 | | Tin, tin oxide and inorganic compounds, except SnH $4, as Sn | -- | 2
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0615.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html