T
Tonnage Band
Definition
In REACH, the tonnage band is the annual manufacture or import volume of a substance, expressed in tonnes, that determines the level of information required in the registration dossier. The four tonnage bands are: 1–10 t/year (basic data requirements, Annexes VI–VII); 10–100 t/year (extended data, Annex VIII); 100–1,000 t/year (further extended data, Annex IX); and >1,000 t/year (comprehensive data, Annex X). Higher tonnage bands require more toxicological and ecotoxicological testing and a Chemical Safety Report.
Source
REACH Regulation (EC) No 1907/2006, Articles 12–14 and Annexes VII–X.
Practical Explanation (Compliance Context)
Accurate reporting of tonnage is critical: registrants must update their registration when volumes change to a higher tonnage band to ensure dossier completeness. Under-reporting tonnage is a compliance violation. The REACH Recast may revise information requirements at lower tonnage bands to improve data quality for smaller-volume substances. For joint registration via SIEF, each registrant’s individual tonnage band determines their required data contribution.