Richard E. Engler, Ph.D.
Director of Chemistry

T: 202-557-3808
F: 202-557-3836
Download vCard

BS, Haverford College, Chemistry (Honors), 1987

MS, University of California, San Diego, Physical Organic Chemistry, 1989

Ph.D., University of California, San Diego, Physical Organic Chemistry, 1995


U.S. EPA Bronze Medal for Commendable Service (1999, 2000, 2004, 2013, 2014)

U.S. EPA James T. Craig Pollution Prevention Leadership Award (2007)

U.S. EPA Superior Accomplishment Award (2006)

U.S. EPA Mission Award (1998, 2004, 2010)

U.S. EPA Teamwork Award (2001, 2006, 2010)

Syntex Corporation Fellow, University of California, San Diego (1992)

Eli Lilly Fellow, University of California, San Diego (1991-1992)



Richard E. Engler, Ph.D. is Director of Chemistry with Bergeson & Campbell, P.C. (B&C®).  Dr. Engler is a 17-year veteran of the U.S. Environmental Protection Agency (EPA) and is one of the most widely recognized experts in the field of green chemistry, having served as senior staff scientist in EPA's Office of Pollution Prevention and Toxics (OPPT) and leader of EPA's Green Chemistry Program.  He has participated in thousands of Toxic Substances Control Act (TSCA) substance reviews at EPA, as well as pre-notice and post-review meetings with submitters to resolve complex or difficult cases, and he draws upon this invaluable experience to assist B&C clients as they develop and commercialize novel chemistries.

Dr. Engler's expansive understanding of the specific challenges and opportunities TSCA presents for green and sustainable chemistry is a powerful asset for clients during regulatory review.  He assists clients in performing toxicological reviews, performing environmental fate modeling using Sustainable Futures tools, and preparing scientific and test data for regulatory submission.  He is particularly skilled in preparing Pollution Prevention (P2) statements to highlight the concrete environmental benefits of biobased or renewable chemicals, as well as other sustainable chemistry products and processes.

During his years at EPA, Dr. Engler was an advocate for green chemistry and leader of the Presidential Green Chemistry Challenge Awards, served many years on the organizing committee of the American Chemistry Society's Green Chemistry & Engineering Conference, performed relevancy reviews for EPA's Office of Research and Development Small Business Innovation Results funding, and represented EPA on the NSF/GCI/ANSI 355: Greener Chemicals and Processes Information Standard development committee, where he served as Vice-Chair.  He also taught risk-based decision-making at the University of California, Berkeley Extension's Green Chemistry Certificate program.

Dr. Engler holds a Ph.D. in physical organic chemistry from the University of California, San Diego, and taught classes in organic chemistry there and at the University of San Diego prior to joining EPA.

Representative Engagements:

  • Assisted Fortune 50 company with business-critical new chemical notice and coordinated closely with EPA to achieve timely success.
  • Prepared an Optional P2 Statement for a premanufacture notice (PMN) submitted by a leading global specialty chemical company that lead to a determination of reduced relative risk and a no Section 5 regulatory action on the PMN substance.
  • Responded to concerns raised during review of a PMN submitted to reduce a risk-based, up-front ban to a non-risk-based Significant New Use Rule (SNUR).
  • Prepared comments on an existing chemical SNUR to describe accurately on-going uses to protect a Fortune 500 business’ critical product lines and protect confidential business information.
  • Assisted small, startup biobased chemical company with determining which of its intermediates and byproducts are reportable under TSCA.
  • Assisted leading U.S. additive producer with substance identity profile (SIP) and sameness reviews for Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) registrations.
  • Prepared a regulatory analysis to demonstrate compliance with TSCA Chemical Data Reporting (CDR) regulations and to avoid a threatened lawsuit against a Fortune 500 company.
  • Assisted global chemical company with preparation for EPA TSCA audit and attended site visit by EPA inspectors; addressed to inspector’s questions in the moment, avoiding additional follow-on questions by EPA.
  • Assisted small company to respond to EPA TSCA audit; ensured that responses were within the scope of the audit, avoiding additional data gathering.

Professional & Community Involvement:

Member, American Chemical Society, 1986 - present

Member, Sigma Xi Research Society, 1990 - present

ACS GCI/NSF Standard 355 - Joint Committee for Greener Chemical, Products and Processes Information Standard (vice chair, subgroup chair, voting member), 2009-2011

Green Chemistry and Engineering Conference Organizing Committee, 2002-2010, 2013

Office of Pollution Prevention and Toxics, Diversity Action Plan Committee, 1999-2001



Lynn L. Bergeson, Richard E. Engler, Ph.D., co-authors, “Pesticides, Chemical Regulation, and Right-To-Know 2017 Annual Report,” in The Year in Review 2017: Environment, Energy, and Resources Law, American Bar Association (2018).

Lynn L. Bergeson, Charles M. Auer, Co-Editors; Timothy D. Backstrom, Lisa R. Burchi, Lisa M. Campbell, Sheryl L. Dolan, Richard E. Engler, Ph.D., Margaret R. Graham, Oscar Hernandez, Ph.D., Carla N. Hutton, Kathleen M. Roberts, Contributing Authors, New TSCA: A Guide to the Lautenberg Chemical Safety Act and Its Implementation, American Bar Association Section of Environment, Energy, and Resources (2017).

Lynn L. Bergeson, Richard E. Engler, Ph.D., co-authors, “Pesticides, Chemical Regulation, and Right-To-Know 2016 Annual Report,” in The Year in Review 2016: Environment, Energy, and Resources Law, American Bar Association (2017).


Richard E. Engler, Ph.D. and Jeffery T. Morris, Ph.D., "Why the US EPA can, and should, evaluate the risk-reducing role a new chemical may play if allowed on the market,Chemical Watch, February 22, 2021.

Lynn L. Bergeson, Richard E. Engler, Charles M. Auer, and Kathleen M. Roberts, "New Chemicals Under New TSCA—Stalled Commercialization," Bloomberg Environment Insights, September 11-13, 2018.

Richard E. Engler, Ph.D., "EPA Includes Active-Inactive Designations on Updated TSCA Inventory," ABA Section of Environment, Energy, and Resources PCRRTK Newsletter, Volume 19, Issue 3, July 2018.

Lynn L. Bergeson, Richard E. Engler, Ph.D., and Lauren M. Graham, Ph.D., "TSCA Affects on Algae, Other Novel Biosources, and Bioprocesses," Industrial Biotechnology, Volume 13, Issue 5, October 2017.

Lynn L. Bergeson, James V. Aidala, Jr., Charles M. Auer, Richard Engler, Ph.D., and Oscar Hernandez, "Practitioner Insights: Enhancing TSCA Reform Implementation," Bloomberg BNA Daily Environment Report, August 2, 2017.

Kathleen M. Roberts, Richard E. Engler, Ph.D., Charles M. Auer, Lynn L. Bergeson, "An Analysis of Section 8 of the New Toxic Substances Control Act," BNA Daily Environment Report, August 9, 2016.

L. Bergeson, B. Auerbach, L. Campbell, T. Backstrom, S. Dolan, J. Vergnes, R. Engler, J. Bultena, K. Baron, C. Auer, "The DNA of the U.S. Regulatory System: Are We Getting It Right for Synthetic Biology?," Woodrow Wilson International Center for Scholars Synthetic Biology Project Report, October 15, 2015.

Richard E. Engler, Ph.D., "The Impact of Toxic Substances Control Act Nomenclature on the Commercialization of Biobased Chemicals," AOCS Inform, July/August, 2015.

Richard E. Engler, Ph.D., "Thought Leadership: The Toxic Substances Control Act and the Bioeconomy: Part 3, Call to Action," Biofuels Digest, May 18, 2015.

Richard E. Engler, Ph.D., "Thought Leadership: The Toxic Substances Control Act and the Bioeconomy: Part 2, Reportable Substances across the Manufacturing Process," Biofuels Digest, May 1, 2015.

Richard E. Engler, Ph.D., "The Toxic Substances Control Act and the Bioeconomy: Part 1, The Impact of Nomenclature on the Commercialization of Biobased Chemicals," Biofuels Digest, April 26, 2015.

Engler, Richard E., "The Complex Interaction Between Plastic Marine Debris and Toxic Chemicals in the Ocean."Environ. Sci. Technol., 46, 12302 (2012) (doi: 10.1021/es3027105).

Engler, Richard E., "Green Engineering-Integration of Green Chemistry, Pollution Prevention, and Risk-Based Considerations: Overview." In Kent and Riegel's Handbook of Industrial Chemistry and Biotechnology, 11th Edition, Springer-Verlag, 2007.

"Green Chemistry." In Encyclopedia of Toxicology, 2nd Edition, Philip Wexler, Ed., Academic Press, 2005 (doi: 10.1016/B0-12-369400-0/00463-4).

Perrin, C. L., Engler, R. E., and Young, D. B., "The Role of Bicarbonate Ion in the Base-Catalyzed Hydrolysis of Cyclic Imidatonium Ion." J. Amer. Chem. Soc., 122, 4877 (2000) (doi: 10.1021/ja993771f).

Perrin, C. L. and Engler, R. E., "Origin of Apparent Stereoelectronic Effects in Structure and Reactivity of Benzoquinone Monooximes." J. Org. Chem., 62, 687 (1997) (doi: 10.1021/jo961386s).

Perrin, C. L. and Engler, R. E., "Quantitative Assessment by 1D-EXSY NMR of Stereoelectronic Control in Acid-catalyzed Exchange Between Stereoisomeric 2-Methoxy-1,3-dioxanes and Methanol," J. Amer. Chem. Soc., 119, 585 (1997) (doi: 10.1021/ja962808i).

Perrin, C. L. and Engler, R. E., "Accurate Rate Constants for Chemical Exchange from Improved Weighted Linear Least-Squares Analysis of Multiple 1D-EXSY Data," J. Magn. Reson., 123, 188 (1996) (doi: 10.1006/jmra.1996.0234).

Perrin, C.L. and Engler, R. E., "Secondary H/D Kinetic Isotope Effect for Dissociation of Aqueous Ammonium Ion." J. Phys. Chem., 95, 8431 (1991) (doi: 10.1006/jmra.1996.0234).

Perrin, C. L., Engler, R. E., "Weighted Linear Least Squares Analysis of EXSY Data from Multiple 1D Selective Inversion Experiments," J. Magn. Reson., 90, 363 (1990) (doi: 10.1016/0022-2364(90)90143-w).

Engler, R. E., Johnston, E. R., and Wade, C. G., "Dynamic Parameters from Nonselectively Generated 1D Exchange Spectra," J. Magn. Reson., 77, 377 (1988) (doi: 10.1016/0022-2364(88)90188-6).

Speaking Engagements:

What To Expect When You’re Electing (a New President),” Bergeson & Campbell, P.C., (January 28, 2021).

“Evaluating New Chemicals and Disconnects in Hazard Communication,” PSX 2020, (September 16, 2020). 

“TSCA Developments 2020,” Chemical Watch, (July 16, 2020).

TSCA Fundamentals,” Chemical Watch, (July 15, 2020).

“Road-map for Innovators - Commercialization in a Circular Economy,” 24th Annual Green Chemistry & Engineering Conference, (June 16, 2020).

"TSCA New Chemicals," GlobalChem Webinar Series, (May 13, 2020).

“State Ingredient Communication Requirements and Related Legal and Commercial Issues Webinar,” Household & Commercial Products Association, (October 3, 2018).

WEBINAR -- TSCA Confidential Business Information and Generic Naming: Analyzing the New Rules,” Bloomberg BNA and Bergeson & Campbell, P.C., (September 18, 2018).

“New TSCA and Green Chemistry Innovation,” Green Chemistry & Engineering Conference, Portland, Oregon (June 18, 2018). 

“Renewable Chemicals Summit,” Advanced Bioeconomy Leadership Conference on Development & Deployment, Washington, D.C. (March 1, 2018).

“Outlook for Green and Sustainable Chemistry,” Chemical Watch 5th Regulatory Summit USA 2017, Washington, D.C. (October 18, 2017).

“The Effect of TSCA Reform on New and Existing Chemicals: EPA Review, Regulation, and Testing Requirements,” TSCA: Best Practices in Toxicology, Risk, and Chemical Management Strategies Fall 2017 Symposium, Washington D.C. (October 13, 2017).

WEBINAR -- TSCA Inventory Final Rule: Reporting Requirements Under the New Chemical Inventory Reset,” Business & Legal Resources (July 12, 2017).

“TSCA, its effects on renewable feedstocks, and how TSCA reform has changed things,” ACS Green Chemistry & Engineering Conference, Reston, Virginia (June 15, 2017).

WEBINAR -- Reviewing New Chemicals Under Amended TSCA: Impact on Innovation,” Bloomberg BNA (June 12, 2017).

“Legal, IP, and Regulatory Challenges and Opportunities,” Algae Biomass Summit, Phoenix, Arizona (October 25, 2016).

WEBINAR -- The New TSCA Webinar 4: Preemption, PBTs, Fees, and Judicial Review,” Chemical Watch (October 4, 2016).

WEBINAR -- The New TSCA Webinar 3: Inventory, CDR, and CBI,” Chemical Watch (September 12, 2016).

"TSCA and the Cellulosic Revolution," Advanced Bioeconomy Leadership Conference, Washington, D.C. (February 18, 2016).

"US Market Pressures and the Battle Between Hazard and Risk," Chemical Watch Global Supply Chain Summit, Arlington, Virginia (December 7, 2015).

"Leveraging Synthetic Biology's Promise and Managing Potential Risk," Woodrow Wilson International Center for Scholars Synthetic Biology Project Seminar and Webinar, Washington, D.C. (October 15, 2015).

"Legal, Regulatory, and Political Considerations in Commercializing Algae Products," Algae Biomass Summit, Washington, D.C. (October 1, 2015).

"The Regulatory Landscape for Novel Polymers," International Conference and Exhibition on Biopolymers and Bioplastics, San Francisco, California (August 12, 2015).

"TSCA and the Regulation of Biofuels" and "Leveraging 'Green' for Visibility," BIO World Congress on Industrial Biotechnology, Montreal, Canada (July 20-21, 2015).

"Renewable Chemicals, Nomenclature, and TSCA: What You Need to Know to Commercialize," ACS Green Chemistry & Engineering Conference, North Bethesda, Maryland (July 16, 2015).

"Regulation of Renewable Chemicals," Northwest Green Chemistry Webinar Series (June 30, 2015).

"Class 2 Substances and the TSCA Inventory," Advanced Bioeconomy Leadership Conference 2015, Washington, D.C. (March 11-13, 2015).

"The Rise of Renewable Feedstocks: Enabling a New Generation of Chemicals," 6th Annual Next Generation Bio-Based & Sustainable Chemicals Summit, New Orleans, Louisiana (February 4, 2015).

"Green Chemistry Award Winners," 16th Annual Green Chemistry and Engineering Conference, Session Chair (June 19 - 21, 2012).

"Plastic Marine Debris and Toxic Chemicals in the Ocean," Nike Corporate Headquarters, Beaverton, Oregon (September 30, 2011).

"Green Chemistry," Montclair State University PharmFest, Montclair, New Jersey (April 12, 2010).

"Government Programs Supporting Green Chemistry," 239th National Meeting of the American Chemical Society, San Francisco, California (March 23, 2010).

"The Presidential Green Chemistry Challenge Awards Program," Great Lakes Green Chemistry Networkwebinar (March 3, 2010).

"Green Chemistry Applications in Green Buildings," U.S. EPA National Centerfor Environmental Research Sustainability Series, (December 8, 2009).

American Institute of Industrial Hygienists, Connecticut Section, "Green Chemistry Applications in Green Buildings," Hartford, Connecticut (October 21, 2009).

"Green Chemistry: Reducing the Impact of Transportation," CleanTech 2009, Houston, Texas (May 5, 2009).

"Risk Screening Environmental Indicators," Annual TRI Conference, Arlington, Virginia (March 31, 2009).

"Green Chemistry, is it an Advantage in Industry?" 237th National Meeting of the American Chemical Society, co-organizer, co-presider, Salt Lake City, Utah (March 25, 2009).

"Green Chemistry: a Philosophy," California Polytechnic State University, San Luis Obispo, CA (April 15, 2008); James Madison University, Harrisonburg, Virginia (March 28, 2008); West Virginia University, Morgantown, West Virginia (April 14, 2007).

"Green Chemistry: Designing Less Hazardous Chemical Products and Processes," 235th National Meeting of the American Chemical Society, New Orleans, Louisiana (April 8, 2008).

"Green Chemistry Innovations for Water Treatment," Association of Water Technologies 2007 Water Technologies Convention & Exposition, Colorado Springs, Colorado (November 8, 2007).

2200 Pennsylvania Avenue, NW, Suite 100W
Washington, D.C. 20037
202-557-3800 • 202-557-3836 (fax) |
Contact • Twitter
Privacy Policy | Terms of Use | Cookie Policy | Attorney Advertising | Trademarks
©2021 Bergeson & Campbell, P.C.
All Rights Reserved.