Contact Information

  • Richard Engler
  • Technical Contact
  • U.S. Environmental Protection Agency
  • 1200 Pennsylvania Ave.
  • Washington, DC 20460
(202) 564 - 8740
EPA - Green Chemistry

Green Chemistry Expert System

Information and Instructions for download

Author Contact:


The Green Chemistry Expert System (GCES) is a stand-alone computer program that enables users to identify and/or design greener chemicals and chemical processes. The system is applicable for new as well as existing chemicals and can be used to (a) quantify and categorize hazardous substances used in or generated by a chemical reaction, (b) provide technical information regarding green synthetic methodologies, (c) design safer chemical products, and (d) identify and evaluate safer solvents. The GCES is an excellent resource for the development of educational materials that illustrate the principles of green chemistry while enabling advanced students to interactively evaluate new products and synthetic strategies.

Summary prepared May 2005 by Julie A. Haack, Department of Chemistry at the University of Oregon.


US Environmental Protection Agency, Green Chemistry Expert System. oppt/ greenchemistry/ pubs/ gcesdownload.html (accessed June 2011).

Category Descriptors

Green Chemistry Principles
  • Analyze in Real-Time to Prevent Pollution
  • Avoid Chemical Derivatives
  • Design for Degradation
  • Design Less Hazardous Chemical Syntheses
  • Design Safer Chemicals and Products
  • Increase Energy Efficiency
  • Maximize Atom Economy
  • Minimize the Potential for Accidents
  • Prevent Waste
  • Use Catalysts
  • Use Renewable Feedstocks
  • Use Safer Solvents/Reaction Conditions
Chemistry Subdiscipline
  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Inorganic Chemistry
  • Materials Science
  • Nanotechnology (Chemistry Subdiscipline)
  • Organic Chemistry
  • Physical Chemistry
  • Polymer Chemistry
Target Audience
  • Colleges/Universities
  • Databases