About SCCT


The SCCT is will address the broader impact of toxicological research to inform decisions that advance safer chemistry throughout the product lifecycle. Additionally, the SCCT will support scientific activities designed to promote the execution and application of toxicological research to reduce the likelihood of regrettable substitution throughout the supply chain through interdisciplinary partnerships.


To enhance understanding of the characteristics of a sustainable chemical.

To foster correct application and interpretation of state of the science alternative testing methods to assess human health hazards.

To advance the adoption of contemporary toxicology approaches for assessing data gaps for health and/or environmental toxicity and fate endpoints.

To encourage the balancing of lifecycle considerations against toxicological considerations when designing chemical formulations.

To promote best practices in performing toxicological-based research to support new product development and informed substitution.

To develop, propose, and conduct a variety of cutting-edge programs and educational activities that emphasize the latest developments and issues related to sustainable chemical design, alternatives assessment, and informed substitution.

To act as a resource to the Society in the area of sustainable chemical design, alternatives assessment and informed substitution.

2020–2021 Executive Committee

SCCT Executive

Jennifer Y. Tanir, PhD


Dr. Tanir is a Senior Sustainability Scientist at ToxServices LLC, where she manages Cradle to Cradle Certified™ Products Program certification, Living Product Challenge’s Transparent Material Health, ToxServices’s ToxFMD Screened Chemistry® Library, and supplier outreach and audits for the US EPA Safer Choice Program. Dr. Tanir joined ToxServices in 2019 with almost 20 years of green and sustainable chemistry-related experience working in industry (DuPont), nonprofit organizations (American Chemical Society’s Green Chemistry Institute and the Health and Environmental Sciences Institute), and consulting (Toward Safer LLC). She has a PhD in polymer/organic chemistry from the University of North Carolina at Chapel Hill and BS in chemistry from the University of Richmond. She serves in leadership roles in several professional organizations, including the Association for the Advancement of Alternatives Assessment, American Chemical Society, and SOT.

SCCT Executive

Pamela J. Spencer, PhD, DABT

Vice President

Dr. Spencer is the Vice President of Regulatory, Product Stewardship & Quality at ANGUS Chemical Company in Chicago, Illinois. Prior to this role, she worked for the Dow Chemical Company for 30 years, retiring as the Scientific Director of Dow’s Toxicology Environmental Research & Consulting function. Dr. Spencer is an advocate at every level, working to promote the concepts of safer product design with regulatory agencies, industry, academia, and nongovernmental organizations. She has extensive experience in regulatory toxicity testing and research to define human health risks with numerous publications to date in the areas of neurotoxicology, genetic toxicology, carcinogenicity, and green chemistry. She received her PhD from the Department of Toxicology, School of Public Health, University of Michigan and her MS in biology from Central Michigan University.

SCCT Executive

Margaret H. Whittaker, PhD, ERT, DABT, CBiol, FRSB

Vice President-Elect

Dr. Whittaker is the Managing Director and Chief Toxicologist of ToxServices LLC. Dr. Whittaker is one of the pioneers in the field of chemicals alternatives assessments and is a key contributor to advancing these methods around the world. She is an accomplished human health risk assessor, chemical hazard assessor, and alternatives assessor. She performs quantitative exposure and risk assessments for projects including California Proposition 65 safe harbor assessments, medical device extractables and leachables assessments, and cosmetics/personal care product assessments, among others. Dr. Whittaker is a Diplomate of the American Board of Toxicology who earned a PhD in toxicology from the University of Maryland, Baltimore and an MPH in environmental health from the University of Michigan. Dr. Whittaker is a UK/EUROTOX Registered Toxicologist, as well as a Chartered Biologist and Fellow of the UK Royal Society of Biology.

SCCT Executive

Mansi Krishan, PhD, ERT


Mansi Krishan is a Food Safety Scientist—Toxicology at Danone North America. She provides technical expertise in toxicology and risk assessment of ingredients, contaminants and food contact materials to support business and innovation. Before she joined Danone North America, she was a Senior Scientific Program Manager at ILSI North America, where she led and managed research committees on Food and Chemical Safety, and Food Packaging. She has authored/co-authored multiple peer-reviewed publications, and a book chapter. She has received multiple awards for her scientific contributions by prestigious toxicology societies including Society of Toxicology (SOT), EUROTOX, American College of Toxicology (ACT), and Society of Toxicology, India (STOX). She has also been invited by toxicology journals to peer review manuscripts and has chaired/co-chaired scientific sessions, roundtables, and CE courses at SOT and other conferences.

Dr. Krishan has been an active member of the SOT and has been instrumental in highlighting the impact of toxicology in food safety and increasing the visibility of the emerging Food Safety Specialty Section (FS3) within SOT. She organized the first mentoring event of the FS3 at SOT 2018 and the first webinar series supported by FS3 in 2016. She is currently the Vice President of Mixtures Specialty Section (2020–2021), Immediate President of the FS3 (2020–2021), elected member of the SOT Specialty Section Collaboration and Communication Group (SS-CCG; 2020–2022), and member of the Regulatory and Safety Evaluation Specialty Section (RSESS) and Women in Toxicology (WIT) 2020 Proposal Review Committees. She has also served as a member of the SOT Women in Toxicology (WIT) 2019 Awards committee. Passionate about helping/mentoring undergraduates, graduate students, post docs, early career scientists pursuing career in toxicology, she has served as a mentor in several SOT specialty sections mentoring events. In 2019, under her leadership the FS3 introduced a new award for early career scientists in food safety and added new officer position of “junior graduate student representative” to provide more leadership opportunities to graduate students. This idea was well received by SOT Council and they are encouraging other specialty sections to add a similar graduate or postdoc officer position. Dr. Krishan is also a member of other specialty sections, special interest groups and regional chapters within SOT i.e. Sustainable Chemicals through Contemporary Toxicology; Exposure; Regulatory and Safety Evaluation; Risk Assessment; Metals; In Vitro and Alternative Methods; WIT; Association of Scientists of Indian Origin; and Mountain West. She has membership in the EUROTOX, Society for Risk Analysis, and Toxicology Forum.
SCCT Executive

Lynne Haber, PhD, DABT


Dr. Haber is an Associate Professor in the Department of Environmental and Public Health Sciences at the University of Cincinnati, where she leads the Risk Science Center within the department. She received her PhD in molecular biology from the Massachusetts Institute of Technology (MIT). She has more than 20 years of experience in development of assessment documents and in risk assessment methods development. She authored or been the reviewer of 100’s of documents for multiple federal and state/provincial agencies and private sponsors. Her work on risk assessment methods has included two general areas: improving methods for extrapolating from the available data to safe exposures, and designing approaches to address challenging risk assessment questions. For example, she coauthored a framework for evaluating intermittent exposure scenarios and has investigated the use of biomarkers to improve quantitative aspects of risk assessment. Current work also includes improvements to read across and other methods for data-poor chemicals. She has served as a panel chairperson or panel member for scientific peer reviews organized by EPA and other U.S. and foreign government agencies, as well as private organizations, and she has served on two panels for the NAS/NRC, and on the IPCS EHC 240 dose-response author group. She has authored/coauthored more than 40 publications of chemical assessments or risk assessment methods, and more than 10 book chapters, including as the lead author for the chapter on noncancer risk assessment in Patty’s Toxicology. She is also active as an editorial reviewer for scientific journals, through presentation of invited lectures, and is active in teaching continuing education. Dr. Haber has been a member of SOT since 1998, and has served as the Secretary/Treasurer of the Risk Assessment Specialty Section, and held several roles, including the chair succession chain, in the Ethical, Legal and Social Issues Specialty Section.

SCCT Executive

Britt McAtee, PhD, DABT


Dr. McAtee has worked as a toxicologist at PPG since 2011. She provides toxicological expertise to PPG’s business units globally, which includes products sold into diverse end markets, including industrial use, consumer use, and food contact. Dr. McAtee has extensive regulatory experience and has designed toxicology testing strategies to register materials globally, with a focus on US, EU, Korea, and China. Dr. McAtee leads/participates in several internal committees at PPG, with responsibilities for hazard assessment, occupational health, and sustainability initiatives. As a member of the toxicology team at PPG, Dr. McAtee has helped to develop linked processes that are utilized to drive sustainable product development: the Early R&D Hazard Screen, the Substances of Interest Scorecards, and the PPG Restricted Substances List.

Dr. McAtee strongly believes in utilizing tools, such as NAMs and in silico tools, to assess hazards. Communication of the results of these tools to stakeholders is an important driver towards sustainability. Dr. McAtee began her career at ChemRisk in Pittsburgh as a Health Scientist in 2006. At ChemRisk, she participated in a risk assessment/sustainability project for a large tire consortium through the World Business Counsel for Sustainable Development. Dr. McAtee graduated from Allegheny College with a BS in Environmental Sciences, and earned her PhD in Toxicological Sciences from the Johns Hopkins Bloomberg School of Public Health. She is a Diplomate of the American Board of Toxicology (DABT). She has been a member of SOT since 2004 and is currently the President Elect of the Allegheny-Erie Regional Chapter.

SCCT Executive

Zheng Zhou, M.P.H

Student Representative

Zheng Zhou is a PhD student at the Department of Environmental and Occupational Health at Indiana University Bloomington. His area of research centers around quantitative risk assessment and evidence-based decision-making. He is interested in applying Bayesian hierarchical dose-response modeling and meta-analytic techniques in toxicological researches. His interests extend to the development and evaluation of risk mitigation instruments through cost-benefit analysis and policy evaluation. His doctoral research focuses on the assessment of health risks and economic burdens imposed by oral exposure to inorganic arsenic. He has received several merit awards from the Society for Risk Analysis on arsenic-related works. Zheng holds a master’s degree from Indiana University Bloomington and a bachelor’s degree from China Pharmaceutical University.


To email the SCCT leadership, please send an email to SOT Headquarters.


SOT Council approved the Sustainable Chemicals through Contemporary Toxicology Specialty Section bylaws in September 2019.