... vehiCle 4,Appearance : Brownish liquid · Chemical name : Ferric chloride solution· Molecular formula : FeCl3· Molecular weight : 162.21· ... : Brownish liquid1. Usage :Good substitute of solid ferric chloride. In photoengraving; photography; manufacture of other Fe salts, ... for dissolution. •Saves 30% of cost compared with liquid/solid aluminum sulfate, polyaluminum chloride, polyferric sulfate. •Good ...