Ester of fatty acid and monohydric alcohol with high molecular weight is called wax. Carbon numbers of fatty acids are 14-36 and carbon numbers of alcohols are 16-36. Waxes are insoluble in water, but soluble in organic solvents. It is chemically inert. Remains solid at normal temperature. The stems, leaves, flowers and fruits of plants contain wax. Carnoba wax is produced from the Brazilian palm tree. Different types of wax are – lanolin, beeswax, feather wax, hair wax, bewax, carnoba, sebum, cerumen, suberin etc.