Guidance on dossier updates

Many of the registrations already submitted under REACH need to be updated to include more information. Two means exist by which an update may be triggered: spontaneous (i.e. at the initiative of the registrant), and when requested by ECHA or Member State Competent Authorities.

In some cases, for example changes to classification and labelling, only the Lead Registrant will need to submit additional information. In other situations, for example changes to substance identification or perhaps the addition of new uses, all affected registrants may need to update their dossiers.

This short guide identifies when updates are needed and who needs to submit the additional information.