The pre-registration phase of the REACH Regulation ended on 1 December 2008. Pre-registration was required for all "phase-in substances" manufactured or imported in quantities reaching 1 t or more per year.
As of 1 January 2009, the pre-registration data are published by the Agency. This enables relevant parties to join the Substance Information Exchange Forum (SIEF).
for the first time after 1 December 2008 must then pre-register the substance within six months of first manufacture/first import or first use of the substance in quantities exceeding 1 t p.a. and at least 12 months prior to expiry of the relevant transitional periods.
Phase-in substances are, in simple terms, "legacy substances". As defined by the REACH Regulation, phase-in substances must satisfy at least one of the following criteria (from the Baden-Württemberg Reach Network):
Substances which do not satisfy any of the stated criteria are either "notified substances" which are regarded as being registered under Article 24, or "non-phase-in substances".