The category approach used in the Toolbox:

  • Focuses on intrinsic properties of chemicals (mechanism or mode of action, (eco-)toxicological effects).
  • Allows for entire categories of chemicals to be assessed when only a few members are tested, saving costs and the need for testing on animals.
  • Enables robust hazard assessment through mechanistic comparisons without testing.

The QSAR Toolbox is a software intended to be used by governments, the chemical industry and other stakeholders to fill gaps in (eco-)toxicity data needed for assessing the hazards of chemicals. The Toolbox incorporates information and tools from various sources into a logical workflow. Grouping chemicals into chemical categories is crucial to this workflow.

More about (Q)SARs

OECD QSAR project | ECHA Information Toolkit


December 2014

QSAR Toolbox 3.3 now available for free download

June 2014

Videos and supplementary materials now available for QSAR Toolbox Web Training.

April 2014

New training materials are now available on the Support -page for:

  • AOP workflow for skin sensitization;
  • Use of Toolbox query tool;
  • Use of ECHA Chem data for predicting skin sensitisation;
  • Aquatic toxicity to fish.


Older news