The Collaborative International Dictionary of English v.0.48:
Isolable \I"so*la*ble\, a. [See Isolate.] (Chem.) Capable of being isolated, or of being obtained in a pure state; as, gold is isolable. [1913 Webster]WordNet (r) 3.0 (2006):
isolable adj 1: capable of being isolated or disjoined