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Helpful Resources for Consumers



Aromatic diisocyanates—primarily MDI and TDI—are used by various industries as building blocks primarily to make polyurethane products, such as rigid and flexible foams, coatings, adhesives, sealants and elastomers. Many of the products that we rely upon every day are safer, tougher and more comfortable through the use of polyurethanes made with diisocyanates (DII) chemistry. Extensive safety precautions are undertaken by the DII and polyurethane industries to address the health and safety of users of DII and to comply with all government regulations.

If you are interested in learning more about diisocyanates chemistry and related products, here are some helpful resources you may want to visit:

  • MDI and TDI in the Environment: The summaries of existing information on the release and behavior of MDI and TDI in the environment found that these chemistries have not shown any adverse impact on municipal waste handling processes, landfills or incineration.
  • Aliphatic diisocyanates: General information from ACC about aliphatic diisocyanates, such as hexamethylene diisocyanate (HDI), methylene dicyclohexyl diisocyanate or hydrogenated MDI (HMDI) and isophorone diisocyanate (IPDI).  Aliphatic diisocyanates are often further reacted to form polyisocyanates which act as building blocks to form color-stable polyurethane coatings and elastomers.

Federal Government Agencies
A number of federal agencies provide useful information about many chemicals, including DII.


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