About DIPPR Created in 1978 under the auspices of the American Institute of Chemical Engineers the Design Institute for Physical Properties (DIPPR) has become the premier research collaboration on physical property data to satisfy process engineering needs. DIPPR Projects DIPPR runs both Common and Elective projects. All DIPPR members participate in Common projects, the costs of which are covered by DIPPR dues. DIPPR Membership and Benefits DIPPR has a broad range of participants worldwide including companies in the chemical, petroleum, biochemical, pharmaceutical, and allied industries; environmental companies; engineering contractors, consultants, and specialty firms; government agencies; academic institutions; and consortia. DIPPR Events & Products Learn more about DIPPR Thermophysical Properties 801, Detherm, ESP, and publications.