DEPARTMENT OF LABOR AND ECONOMIC OPPORTUNITY
DIRECTOR'S OFFICE
GENERAL INDUSTRY AND CONSTRUCTION SAFETY AND HEALTH
STANDARD
(By authority conferred on the director of the department of labor and economic
opportunity by sections 14, 16, 19, 21, and 24 of the Michigan occupational safety and
health act, 1974 PA 154, MCL 408.1014, 408.1016, 408.1019, 408.1021, and 408.1024,
and Executive Reorganization Order Nos. 1996-1, 1996-2, 2003-1, 2008-4, 2011-4, and
2019-3, MCL 330.3101, 445.2001, 445.2011, 445.2025, 445.2030, and 125.1998)
PART 307. ACRYLONITRILE
R 325.51501. Scope, applicability, adoption, and availability of standards.
Rule 501. (1) The rules in this part apply to all occupational exposures to
acrylonitrile (AN), Chemical Abstracts Service Registry No. 000107131, except as
provided in subrules (2) and (3) of this rule.
(2) The rules in this part do not apply to exposures that result solely from the
processing, use, and handling of the following materials:
(a) Acrylonitrile-butadiene-styrene (ABS) resins, Styreneacrylonitrile (SAN) resins,
nitrile barrier resins, solid nitrile elastomers, and acrylic and modacrylic fibers in the
form of finished polymers, including products fabricated from such finished polymers.
(b) Materials made from or containing AN, or both, for which objective data is
reasonably relied upon to demonstrate that the material is not capable of releasing AN in
airborne concentrations of more than 1 part per million (ppm) as an 8-hour, time-
weighted average under the expected conditions of processing, use, and handling that
cause the greatest possible release.
(c) Solid materials made from or containing AN, or both, that will not be heated
above 170 degrees Fahrenheit during handling, use, or processing.
(3) An employer who relies on the exemption in subrule (2)(b) of this rule shall
maintain records of the objective data supporting that exemption and of the basis of the
employer’s reliance on the data, as provided in 29 CFR 1910.1045(q), which is adopted
by reference in subrule (4) of this rule.
(4) The following federal Occupational Safety and Health Administration (OSHA)
regulations are adopted by reference in these rules:
(a) 29 CFR 1910.1045, “Acrylonitrile,” as amended May 14, 2019.
(b) 29 CFR 1910.1045, appendix A “Substance safety data sheet for acrylonitrile,”
as amended January 8, 1998.
(c) 29 CFR 1910.1045, appendix B “Substance technical guidelines for
acrylonitrile,” as in effect as of the effective date of these rules.
(d) 29 CFR 1910.1045, appendix C “Medical surveillance guidelines for
acrylonitrile,” as in effect as of the effective date of these rules.
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