Article 9a of Directive 70/524/EEC provides that provisional authorisation of such substances, which are listed in part I of Annex C to that Directive, may be given for a period of up to four years from the date on which the authorisation takes effect, if the conditions laid down in Article 3a(b) to (e) of the Directive are met and if it is reasonable to assume, in view of the available results, that when used in animal nutrition it has one of the effects referred to in Article 2(a).
Člen 9a Direktive 70/524/EGS določa, da se začasna dovoljenja za tovrstne snovi, ki so navedene v delu I Priloge C k navedeni direktivi, lahko izdajo za obdobje do štirih let od datuma začetka veljavnosti dovoljenja pod pogojem, da so izpolnjeni pogoji iz člena 3a(b) do (e) Direktive in se na osnovi razpoložljivih rezultatov utemeljeno domneva, da ob uporabi v prehrani živali povzroča enega izmed učinkov iz člena 2(a).