EU Regulation 2017/2212 amends Regulation 833/2014 with effect from 2nd December, to permit certain operations (import/export) involving hydrazine (CAS 302-01-2) in concentrations of 70% or more, which is included in the Common Military List of the EU. Hydrazine has been used as fuel for many rockets and spacecraft, including the space shuttle. It is considered necessary for the flight of the ExoMars carrier module and tests and flight of the ExoMars descent module in the framework of the ExoMars 2020 mission.