Developing a National Emissions Inventory for 4 , 4 ’-Methylene Diphenyl Diisocyanate

Over the last decade, the U.S. Environmental Protection Agency (EPA) has been developing, refining, and updating the National Toxics Inventory (NTI), a nationwide emissions inventory of 188 compounds and classes of compounds that are listed as hazardous air pollutants (HAPs) under the federal Clean Air Act. One of these compounds is 4, 4’-methylene diphenyl… CONTINUE READING