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If during pre-registration of your substance, you entered your substance name in a different way than the other manufacturers and importers, or if you realise during discussions on the sameness of your substance that you do not have the same substance as the other pre-registrants in the pre-SIEF, you may want to look for and join another SIEF. Whether you find a more suitable SIEF or not, you must register your substance with the correct identifiers, which have to be consistent with the analytical data on your substance.
A useful tool when looking for a more suitable SIEF is the list of pre-registered substances. This list contains all pre-registered substances, with the available identifiers, such as EC number, CAS number and chemical name with synonyms. The list is available at:
http://echa.europa.eu/information-on-chemicals/pre-registered-substances. You can also search the list of registered substance available at https://echa.europa.eu/information-on-chemicals/registered-substances.
Once you have examined the list of pre-registered and/or registered substances, the following scenarios are possible:
1) You found a more suitable pre-SIEF for your substance
You can find the lead registrant in the list of lead registrants on the ECHA website. Contact the lead to join the SIEF. If the substance is not listed or no lead is mentioned, you can use REACH-IT to update your pre-registration. If you add the more suitable substance as a similar substance you will have access to this substance pre-SIEF page. As you will not be listed as a member of this pre-SIEF, you will have to take the initiative and get in contact with the pre-registrants therein to explain that you wish to join the SIEF. It is also possible for you to set up the joint submission and to become the lead registrant. For instructions on how to update your pre-registration to view a different pre-SIEF in REACH-IT, see Q&A 1142.
2) You did not find a suitable pre-SIEF for your substance
Most likely you will have to become the lead registrant for the substance. In any case, you should include your pre-registration number in Section 1.3 of your IUCLID dossier, even though it previously corresponded to different substance identifiers (see Q&A 293)In addition, you should keep any relevant documentation that demonstrates the phase-in status of your substance in case it is requested by the enforcement authorities.