... carbon dioxide when heated atmospherically,and its aqueous solution appears acid reaction,becomes purple with FeCl3.Slightly dissolves in water but ... and ventilated place. We also have Salicylic acid medical grade, Sublimed Salicylic acid, Methyl Salicylate,Acetyl Salicylic acid, Sodium Salicylate, Magnesium Salicylate,Salicylamide etc.