To benefit from the extended deadline for registering existing, low volume chemicals by the last REACH registration deadline, you need to have pre-registered your substance with ECHA. If you manufacture or import a substance for the first time at or above 1 to 100 tonnes per year, and your substance is not known to be carcinogenic, mutagenic or toxic to reproduction, you can still pre-register within six months of starting the activity, and at the latest by 31 May 2017 – one year before the deadline.