Ohio Rev. Code § 3719.32: Regulating the sale of poisons.

No person shall knowingly sell or deliver to any person otherwise than in the manner prescribed by laws, or sell or deliver to a minor under sixteen years of age in the manner prescribed by law but without the written order of an adult, any of the following substances or any poisonous compounds, combinations, or preparations thereof: the compounds and salts of antimony, arsenic, chromium, copper, lead, mercury, and zinc; the concentrated mineral acids; oxalic and hydrocyanic acids and their salts, and carbolic acid; yellow phosphorus; the essential oils of almonds, pennyroyal, tansy, and savin, croton oil, creosote, chloroform, chloral hydrate, and cantharides; aconite, belladonna, bitter almonds, colchicum, cotton root, cocculus indicus, conium, digitalis, hyoscyamus, ignatia, lobelia, nux vomica, opium, physostigma, phytolacca, strophanthus, stramonium, veratum viride, or any of the poisonous alkaloids or alkaloidal salts or other poisonous principles derived from such alkaloids, or other poisonous alkaloids or their salts; or other virulent poison.