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Physical/Chemical Properties of HDI, IPDI and HMDI

  • Working with Aliphatic Diisocyanates: This guidance document provides information about important health and safety considerations when working with aliphatic diisocyanates (ADIs).

Shown below is a physical properties chart for HDI, IPDI and HMDI

Physical Properties Chart for HDI, IPDI and HMDI

Additional Resources for Consumers

Aliphatic diisocyanates (ADI) are specialty intermediate chemicals used primarily to make durable coatings, adhesives, textiles, sealants and elastomers. ADIs are typically not sold directly for consumer use. Rather, they are sold primarily to industrial customers who use them as binders or hardeners during manufacturing processes. Volumes of ADI products used in North America are significantly smaller than the aromatic diisocyanates.1

Many of the products that we rely upon every day are safer, tougher and more reliable through the use of polyurethane products made with aliphatic diisocyanates chemistry. Extensive safety precautions are undertaken by the ADI and related industries to address the health and safety of users of ADI and to comply with all government regulations.

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


1 2018 End-Use Market Survey on the Polyurethanes Industry, Center for the Polyurethanes Industry, American Chemistry Council.

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