Multi-Component Substances (MCS) and UVCBs Committee

Mission Statement

Objectives:

  • Develop tools and identifying data gaps in support of risk assessment
  • Identify and develop models and methods (practical / workable)
  • Develop best practices and guidance
  • Engage with multi-stakeholder collaborative research projects

Working Groups

  • Team Resins

    The committee is currently working on the development of case studies on resins (resin acids and rosin acids, hydrogenated esters with glycerol) through which they aim to test and ground-truth the tiered risk assessment framework developed over the past 2 years.

  • Team Kerosene

    The committee is currently working on the development of case studies on kerosene through which they aim to test and ground-truth the tiered risk assessment framework developed over the past 2 years.

  • Team Cedarwood Oil

    The committee is currently working on the development of case studies on cedarwood oil through which they aim to test and ground-truth the tiered risk assessment framework developed over the past 2 years.

  • Team Quaternary Ammonium Compounds

    The committee is currently working on the development of case studies on quaternary ammonium compounds (alkyldimethylbenzylammonium chlorides, ADBACS) through which they aim to test and ground-truth the tiered risk assessment framework developed over the past 2 years.

HESI Staff

Leadership Team

  • Marc Fernandez, PhD

    Environment and Climate Change Canada

Committee Publications

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Improving the Environmental Risk Assessment of Substances of Unknown or Variable Composition, Complex Reaction Products, or Biological Materials (UVCBs)

Substances of unknown or variable composition, complex reaction products, or biological materials (UVCBs) pose unique risk assessment challenges to regulators and to product registrants. These substances can contain many constituents, sometimes partially unknown and/or variable, depending on fluctuations in their ...

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