Acetaldehyde — CAS 75-07-0 — workplace exposure limit
What is the pel (ppm) for Acetaldehyde — CAS 75-07-0 — workplace exposure limit?
For Acetaldehyde, pel (ppm) is disputed: 200 per osha.gov, 25 per dir.ca.gov; pel (mg/m³) is disputed: 360 per osha.gov, 45 per dir.ca.gov; cas no. is 75-07-0, verified against its source on 2026-08-05.
Acetaldehyde | 75-07-0 | 200 | 360 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Acetaldehyde verified
- CAS No.
- 75-07-0 verified
- PEL (ppm)
- 200 sources disagree
- PEL (mg/m³)
- 360 sources disagree
- Ceiling notation
- the values given in the PEL columns are ceiling values per dir.ca.gov
- NIOSH REL, as stated
- Ca See Appendix A See Appendix C (Aldehydes) per cdc.gov
What cdc.gov says
NIOSH REL Ca See Appendix A See Appendix C (Aldehydes)
— cdc.gov, retrieved 2026-09-08
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Acetaldehyde
CAS No.
CAS No. 75-07-0
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 200, as of 2026-08-05.
Acetaldehyde | 75-07-0 | 200 | 360 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 25, as of 2026-09-28.
75070 | | Acetaldehyde | 25 | 45 | C
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 360, as of 2026-08-05.
Acetaldehyde | 75-07-0 | 200 | 360 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 45, as of 2026-09-28.
75070 | | Acetaldehyde | 25 | 45 | C
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0001.html