Have your say on the new Chesar Platform development - share with us your experiences with Chesar 3


The survey will remain open till the 25 March 2022: you still have few days to complete the survey!

Help us understand how you use Chesar 3 by answering this survey.  Your answers will help us take users’ experiences and comments into account when we develop the new Chesar Platform. 

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Chesar can help registrants with the TCC requirements on CSRs


Chesar can support users avoiding certain technical completeness check (TCC) failures by ensuring consistency between the technical dossier and the chemical safety report (CSR).  

Chesar 3.7 available for download


An update of ECHA's chemical safety assessment and reporting tool, Chesar, has been published.

What is Chesar?

CHEmical Safety Assessment and Reporting tool

Chesar is an application developed by the European Chemicals Agency (ECHA) to help companies to carry out their chemical safety assessments (CSAs) and to prepare their chemical safety reports (CSRs) and exposure scenarios (ESs) for communication in the supply chain.

Chesar enables registrants to carry out their safety assessments in a structured, harmonised, transparent and efficient way. This includes the importing of substance-related data directly from IUCLID, describing the uses of the substance, carrying out exposure assessment including identifying conditions of safe use, related exposure estimates and demonstrating control of risks. Based on this, Chesar automatically generates the CSR and exposure scenarios for communication as a text document, and export information on use and exposure to IUCLID. Chesar also facilitates the re-use (or update) of assessment elements generated in a single Chesar instance or imported from external sources.