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California’s Prop 65 and Public Health Concerns over 4,4’-Methylenedianiline

LA Testing provides analytical services to protect the public and help businesses comply with California’s Proposition 65.


Garden Grove, CA, September 4th, 2012
In 1986, California voters approved an initiative to address increasing concerns over exposure to toxic chemicals. That initiative, the Safe Drinking Water and Toxic Enforcement Act of 1986, is better known by its original name of Proposition 65. 
Proposition 65 requires businesses to notify Californians about significant amounts of chemicals in the products they purchase, in their homes or workplaces, or that are released into the environment.  This list includes 4,4’-methylenedianiline, which was added to the Prop 65 list in 1988. 
4,4’-Methylenedianiline is also known as diaminodiphenylmethane or MDA.  According to the Agency for Toxic Substances & Disease Registry (ATSDR), “Methylenedianiline exists in several very similar forms. Of these various forms, 4,4’-methylenedianiline is the form used by industries.”  The agency states, “4,4’-Methylenedianiline is an industrially produced compound that is not known to occur naturally. It is produced by industries mainly for making polyurethane foams (such as insulating materials in mailing containers). Smaller amounts are used for making coating materials, epoxy resins (glues), Spandex® fiber, and dyes and for other purposes.”
LA Testing offers testing services to identify 4,4’-methylenedianiline to help prevent worker exposure to this potentially harmful chemical.  “Back in the 1960s, over 80 people were accidently poisoned by this chemical when it contaminated food products,” reported Joe Frasca, Senior Vice President, Marketing at LA Testing and EMSL Analytical, Inc., a network of environmental testing laboratories.  “Large amounts of this chemical are released annually into the environment during its use in industrial applications.  Workers are perhaps most at risk of accidental exposure as it is used in a number of industries.  Occupational exposure testing and environmental testing can determine if it is a potential health threat,” he continued.  
To learn more about testing for 4,4’-methylenedianiline or other Proposition 65 testing services, please visit, email or call (800) 755-1794. 
About LA Testing and EMSL Analytical, Inc.
LA Testing and EMSL Analytical are providers of environmental testing services and products to professionals and the general public. The companies have an extensive list of accreditations from leading organizations as well as state and federal regulating bodies.


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