Benzyl alcohol is subsequently metabolized to benzoic acid. The resulting calcium benzoate is converted to benzoic acid with hydrochloric acid. It is the ester of benzyl alcohol and benzoic acid. It is rapidly hydrolyzed to benzoic acid and benzyl alcohol. Ethyl benzoate, CHO, is the ester formed by the condensation of benzoic acid and ethanol. From here, benzyl dimethyl amine can be oxidized to benzoic acid using the Fenton process. Humans metabolize toluene and benzoic acid which is excreted as hippuric acid. Due to additives such as benzoic acid/benzoate in the injectable form. It is a byproduct of benzoic acid synthesis by toluene oxidation. It is the simplest amide derivative of benzoic acid. The salts and esters of benzoic acid are known as benzoates . The product contains significant amounts of chlorinated benzoic acid derivatives. Unlike Siamese benzoin, Sumatran benzoin contains cinnamic acid in addition to benzoic acid. Salts of benzoic acid are used as food preservatives. It can be produced by reacting sodium hydroxide with benzoic acid.