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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 you rely upon every day are safer, tougher and more comfortable through the use of polyurethanes made with diisocyanates chemistry. Extensive safety precautions are undertaken by the DII and polyurethane industries to protect worker and consumer health and to comply with all government regulations.

If you are interested in learning more about diisocyanates chemistry, including environmental, health and safety information, here are some helpful resources you may want to visit:

  • Center for the Polyurethanes Industry (CPI): CPI offers a full library of literature and videos about polyurethane raw materials, related to environmental, health and safety, distribution, use, emissions, and waste issues.

  • DII in Spray Polyurethane Foam: For health and safety information about DII use in spray polyurethane foam, visit the Homeowner or Do-it-yourself (DIY) sections of www.spraypolyurethane.org.

  • 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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