Xylene; xylol; dimethylbenzene — CAS 1330207 — workplace exposure limit
What is the pel (ppm) for Xylene; xylol; dimethylbenzene — CAS 1330207 — workplace exposure limit?
For Xylene; xylol; dimethylbenzene, pel (ppm) is 100; pel (mg/m³) is 435; ceiling is 300 ppm; ceiling notation is a ceiling value in addition to the TWA values; stel (ppm) is 150; stel (mg/m³) is 655; cas no. is 1330207, verified against its source on 2026-09-29.
1330207 | | Xylene; xylol; dimethylbenzene | 100 | 435 | 300 ppm | 150 | 655
— dir.ca.gov, retrieved 2026-09-28
100
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
- Substance
- Xylene; xylol; dimethylbenzene verified
- CAS No.
- 1330207 verified
- PEL (ppm)
- 100 verified
- PEL (mg/m³)
- 435 verified
- Ceiling
- 300 ppm verified
- Ceiling notation
- a ceiling value in addition to the TWA values verified
- STEL (ppm)
- 150 verified
- STEL (mg/m³)
- 655 verified
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Ceiling notation
A numerical entry in this column represents a ceiling value in addition to the TWA values.
— all from dir.ca.gov, retrieved 2026-09-28
What osha.gov says
Xylenes (o-, m-, p-isomers) | 1330-20-7 | 100 | 435 | - |
— osha.gov, retrieved 2026-08-05
The same source also states
1330207 | | Dimethylbenzene; see Xylene
— dir.ca.gov, retrieved 2026-08-05
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1