National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL)
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV)
National Toxicology Program (NTP) carcinogenic classification: Not listed
International Agency for Research on Cancer (IARC) carcinogenic classification: Not listed
U.S. Environmental Protection Agency (EPA) carcinogenic classification: Not listed
EPA Inhalation Reference Concentration (RfC): Not listed
Agency for Toxic Substances and Disease Registry (ATSDR) Inhalation Minimal Risk Level (MRL): Not established
NIOSH Immediately Dangerous to Life or Health (IDLH) concentration: Not established
Notes on Other Potential Health Effects and Hazards
Occupational lung diseases have been reported in workers in the microwave popcorn production industry. Several volatile organic compounds, including acetoin, are released from the butter flavoring (NTP 2007).
Date Last Revised: 9/6/2012
NIOSH: Manual of Analytical Methods (NMAM), 4th Edition - Acetoin (PDF). March 2003.
Two specially dried Silica Gel Tubes in series. Each tube has a single 600-mg 20/40 mesh section and a glass-fiber filter, the filter faces forward when sampling. SKC 226-183, or equivalent. Use an opaque tube holder or wrap tubes with aluminum foil or other opaque material while sampling.
maximum volume: 9 liters
minimum flow rate: 0.05 L/min for long-term sampling; 3 liters at 0.2 L/min for short-term sampling.
note: Separate the two tubes and cap both ends of each tube as soon as possible after sampling. Individually seal the two tubes. Protect tubes from light after sampling.
current analytical method 1: Gas Chromatography; GC/ECD
analytical solvent: (95:5) ethanol:water with 2 mg/mL PFBHA reagent
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