Dec. 7, 2010
Contact: Office of Communications
Phone: 202-693-1999

OSHA bulletin and alert recommends safety measures to protect
workers from exposure to diacetyl and diacetyl substitutes

WASHINGTON — A new OSHA Safety and Health Information Bulletin and companion Worker Alert recommend that employers use safety measures to prevent exposing workers to the potentially fatal health effects of butter flavorings and other flavoring substances containing diacetyl or its substitutes.

Diacetyl is a chemical used to add flavor and aroma to food and other products. Some workers who breathe diacetyl on the job have become disabled or have died from severe lung disease. Some diacetyl substitutes may also cause harm. OSHA strongly recommends that all flavoring and food manufacturers review and consider implementing applicable recommendations regarding engineering and work practice control measures, medical surveillance, workplace monitoring, and use of appropriate personal protective equipment to minimize each worker's exposure to these flavoring substances.

"Illnesses arising from diacetyl exposure continue to place workers at risk," said Assistant Secretary of Labor for Occupational Safety and Health Dr. David Michaels. "It is vital that employers use preventive measures to protect their workers from the harmful effects caused by these dangerous chemicals."

Currently, OSHA does not have permissible exposure limits for most flavoring substances, including diacetyl. However, flavorings manufacturing facilities are subject to other applicable OSHA mandatory standards including Respiratory Protection and Hazard Communication. Based on concerns for workers' safety and health, OSHA is updating its National

Emphasis Program on Microwave Popcorn Plants to include diacetyl substitutes, and has initiated rulemaking on occupational exposure to diacetyl and food flavorings containing diacetyl.

For more safety and health information on diacetyl and other food flavorings, visit OSHA's Safety and Health Topics page on Lung Disease Related to Butter Flavorings Exposure and the Hazard Communication Guidance for Diacetyl and Food Flavorings Containing Diacetyl.

Under the Occupational Safety and Health Act of 1970, employers are responsible for providing safe and healthful workplaces for their employees. OSHA's role is to assure these conditions for America's working men and women by setting and enforcing standards, and providing training, education and assistance. For more information, visit http://www.osha.gov.

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U.S. Labor Department news releases are accessible on the Internet at www.dol.gov. The information in this release will be made available in alternative format upon request (large print, Braille, audiotape or disc) from the Central Office for Assistive Services and Technology. Please specify which news release when placing your request. Call 202-693-7828 or TTY 202-693-7755.