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Registration Dossier
Definition
A registration dossier is the technical package submitted by a manufacturer or importer to ECHA as the basis for REACH substance registration. The dossier contains: a technical dossier with administrative data, physico-chemical properties, toxicological and ecotoxicological data, classification and labelling, guidance on safe use, and study summaries or robust study summaries; and (for substances above 10 t/year that are hazardous or PBT/vPvB) a Chemical Safety Report. Registration dossiers are prepared in IUCLID format.
Source
REACH Regulation (EC) No 1907/2006, Articles 10–14 and Annexes VI–X.
Practical Explanation (Compliance Context)
Dossier quality is critical: incomplete or inadequate dossiers are subject to ECHA Compliance Checks that can require costly additional studies and delay market access. Dossiers must be updated when new hazard data becomes available, when volumes change tonnagebands, or when ECHA requests updates through evaluation. Companies should maintain living dossiers with current study summaries, updated CSRs, and valid classification.