Acrylonitrile
For Acrylonitrile, cfr section is 1910.1045; action level is 1 ppm as an eight (8)-hour time-weighted average; pel is two (2) parts acrylonitrile per million parts of air (2 ppm) as an eight (8)-hour time-weighted average; ten (10) ppm as averaged over any fifteen (15)-minute period; surveillance trigger is each employee who is or will be exposed to AN at or above the action level, without regard to the use of respirators; exam frequency is At the time of initial assignment, or upon institution of the medical surveillance program; at least annually thereafter, recorded from its source on 2026-08-12.
- Substance
- Acrylonitrile verified
- CFR section
- 1910.1045 verified
- Action level
- 1 ppm as an eight (8)-hour time-weighted average verified
- PEL
- two (2) parts acrylonitrile per million parts of air (2 ppm) as an eight (8)-hour time-weighted average; ten (10) ppm as averaged over any fifteen (15)-minute period
- Surveillance trigger
- each employee who is or will be exposed to AN at or above the action level, without regard to the use of respirators
- Exam frequency
- At the time of initial assignment, or upon institution of the medical surveillance program; at least annually thereafter
- Record retention
- at least forty (40) years, or for the duration of employment plus twenty (20) years, whichever is longer
What the source says
<https://www.law.cornell.edu/definitions/index.php?width=840&height=800&iframe=true&def_id=73fb91be2169421e83a117ba377f14a6&term_occur=999&term_src=Title:29:Subtitle:B:Chapter:XVII:Part:1910:1910.1045> the employer 's reliance on the data, as provided in paragraph (q) of this section . (b) Definitions. Acrylonitrile or AN means acrylonitrile monomer, chemical formula CH 2 = CHCN. <https://www.law.cornell.edu/definitions/index.php?width=840&height=800&iframe=true&def_id=dd84298aa9139708242b9ada1c8295b9&term_occur=999&term_src=Title:29:Subtitle:B:Chapter:XVII:Part:1910:1910.1045> Action level means a concentration of AN of 1 ppm as an eight (8)-hour time-weighted average.
— law.cornell.edu, retrieved 2026-08-12
Source
- law.cornell.eduhttps://www.law.cornell.edu/cfr/text/29/1910.1045