What it means

REACH (EU Regulation (EC) No 1907/2006) makes registration of a chemical substance mandatory once a legal entity manufactures or imports 1 tonne or more per year, with a Chemical Safety Report required above 10 tonnes per year. The registration threshold is a cliff, not a gradient. At 900 kg/yr, the importer is below the line: 900 kg ÷ 1,000 kg = 0.9 tonnes per year, so no registration dossier is due. At 1,000 kg/yr, the same calculation gives 1.0 tonnes per year and the full registration obligation switches on with one extra 100 kg. Above 10,000 kg/yr, the chemical safety report adds another layer of data to the same dossier. ECHA runs the registry, but the data duty sits with the importer or manufacturer. The part most guides skip is that the threshold is per legal entity and per substance, not per product line: two product lines that each carry 600 kg of the same substance inside one entity total 1,200 kg and cross the line.

Why it matters

REACH is a cliff, not a slope: at 900 kg/yr you owe no registration, at 1,000 kg/yr you owe a full dossier, and at 10,000 kg/yr the Chemical Safety Report adds another compliance layer. Plan the tonnage line before ordering, because the obligation is triggered by total annual volume per legal entity.

Example

An importer brings in 950 kg of a plasticiser per year with no REACH registration; a new product line pushes the same substance to 1,000 kg per year, so the full registration dossier becomes due from that year onward — a 50 kg volume change that flips the compliance obligation.

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