The BPA in bottles has been thoroughly reacted with a cross-linking agent to make the polymer. At that point it is no longer BPA. BPA is used to manufacture epoxy, polycarbonate, phenoxy, polyester, and polysulfone resins (plastics). BPA is insoluble in water, but soluble in alcohol and dilute alkalies and carbon tetrachloride. My source for this info is Hawley's Condensed Chemical Dictionary.