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A wax is a simple lipid which is an ester of a long-chain alcohol and a fatty acid. The alcohol may contain from 12-32 carbon atoms. Waxes are found in nature as coatings on leaves and stems. The wax prevents the plant from losing excessive amounts of water.
Waxes. Esters, RCOOR', with long, straight hydrocarbon chains in both R groups; Fatty acid (RCOOH)-alcohol (R'OH-) esters Secreted by sebaceous glands in the skin of animals and perform mostly external protective functions.