Pre-registration is only for companies planning to register phase-in (existing) substances. After pre-registration, potential registrants of the same substance can find each other's contact details in REACH-IT, so they can get in contact to agree on the sameness of their substance, form a substance information exchange forum (SIEF), share data and submit a registration dossier jointly.
- within six months after exceeding the one tonne per year threshold; and
- no later than 12 months before the relevant registration deadline.
See also under the Support section
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