The versatile product of Cashew Industry is know as Cashew Nut Shell Liquid or Cashew Nut Oil or CNSL Oil. Thickness of Cashew Nut Shell is about 1/8 inch containing dark reddish brown viscous liquid as a soft honey comb structure. This is known as pericap fluid of the Cashew Nut. It is one of the best and cheapest material in unsaturated phenols.
CNSL has innumerable applications, such as friction linings, paints, laminating resins, rubber compounding resins, cashew cements, polyurethane based polymers, surfactants, epoxy resins, foundry chemicals, and intermediates for chemical industry. It is also used in varied opportunities for the development of other tailor-made polymers.