alpha-Methylstyrene; 1-methyl-1-phenylethene

For alpha-Methylstyrene; 1-methyl-1-phenylethene, pel (ppm) is 50; pel (mg/m³) is 240; stel (ppm) is 100; stel (mg/m³) is 485, verified against its source on 2026-08-05.

Substance: alpha-Methylstyrene; 1-methyl-1-phenylethene
PEL (ppm): 50
PEL (mg/m³): 240
STEL (ppm): 100
STEL (mg/m³): 485

Sourcedir.ca.gov

Verified2026-08-05

Review by2027-08-05

DatasetUS workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

What the source says

98839 | | alpha-Methylstyrene; 1-methyl-1-phenylethene | 50 | 240 | | 100 | 485

— dir.ca.gov, retrieved 2026-08-05

Source

dir.ca.govhttps://www.dir.ca.gov/title8/5155.html

Last verified against source: 2026-08-05. Scheduled for re-check by: 2027-08-05. This page as Markdown · OKF concept · full dataset as JSON.