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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.
Shellac wax. This wax (known also as lac wax) is produced by a cochineal insect (Tachardia lacca) native of India. It contains a majority of fatty esters (70-82%), free fatty alcohols (8-14%), acids (1-4%) and hydrocarbons (1-6%). The esters are formed of chains of 28 up to 34 carbon atoms.