ECHA's call for comments on substance testing proposals is an open assessment process aimed at determining whether registered chemicals require additional testing. According to REACH regulations, before proceeding with Annexes IX and X (corresponding to registration tonnages of 100-1000 tonnes/year and over 1000 tonnes/year, respectively), registrants must submit a testing proposal (TP). After the comment period concludes, ECHA will finalize the testing requirements based on the feedback received and the characteristics of the substance. By soliciting public comments, ECHA aims to optimize safety assessments and revise testing requirements based on the feedback. Registrants are required to conduct these tests and update safety data to ensure the safe use of chemicals and promote sustainable industry development.
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