Chlorine
For Chlorine, cas no. is 7782-50-5; pel (ppm) is (C)1; pel (mg/m³) is (C)3, verified against its source on 2026-08-05.
- Substance
- Chlorine
- CAS No.
- 7782-50-5
- PEL (ppm)
- (C)1
- PEL (mg/m³)
- (C)3
What the source says
Chlorine | 7782-50-5 | (C)1 | (C)3 | - |
— osha.gov, retrieved 2026-08-05
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
PEL (ppm)
osha.gov says pel (ppm) is (C)1, as of 2026-08-05.
Chlorine | 7782-50-5 | (C)1 | (C)3 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 0.5, as of 2026-08-05.
7782505 | | Chlorine | 0.5 | 1.5 | | 1 | 3
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is (C)3, as of 2026-08-05.
Chlorine | 7782-50-5 | (C)1 | (C)3 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 1.5, as of 2026-08-05.
7782505 | | Chlorine | 0.5 | 1.5 | | 1 | 3
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html