[header] How to prepare benzocaine (fischer esterification ) [title] Add a magnetic stir bar , 1.0 g of p-aminobenzoic acid, and 10ml of absolute ethanol to a round bottom flask. [title] Swirl the mixture until the solid is completely dissolved. [title] Add 1ml of concentrated sulfuric acid drop wise with a pasteur pipette to the ethanol-aminobenzoic solution. 
[step] A solid will precipitate out of the solution. Remember, sulfuric acid is very corrosive and can cause serious chemical burns if allowed to come into contact with your skin.