1) Capable of being volatilized 2) Evaporable 3) Producing some clouds 4) Vaporizable 5) Volatile 6) Volatilisable 7) Volatilizable Found on https://www.crosswordclues.com/clue/vaporific
Vap`o·rif'ic adjective [ Latin vapor vapor + facere to make.] (Chemistry) Producing vapor; tending to pass, or to cause to pass, into vapor; thus, volatile fluids are vaporific ; heat is a vaporific agent. Found on http://www.encyclo.co.uk/webster/V/6