ECHA emphasises that companies registering the same substance (co-registrants) have to make every effort to reach an agreement on sharing data, submitting together and sharing costs in a fair, transparent and non-discriminatory way.

If a company that has the role of lead registrant does not reply to your emails, try contacting them by other means of communication, e.g. registered letter, telephone, identifying other people in the company, and keep record of your efforts. If you still do not get a reply, contact ECHA.

Additional practical advice are available on ECHA’s website.