Alpha-naphthol is the basic material for organic synthetic industry,medical industry and dye industry.It is as well used in plastic rubber antiager, colouring agent of color film. a- naphthol in high demand is the main material to produce insecticide-Cevine.The intermediates made from a- naphthol include n-phenyl-1-naphthalamine,N-ethyl-1-naphthalamine, N-ringene-1-naphthalamine, 1-hydroxy 2-naphthyl acid, 1-naphthol 2-sulfonic acid, 1-naphthol 4-sulfonic acid, 1,7-kreyneic acid, Acetamy-7-naphthol, 2,4.dinitronaphtho,etc,in dye industrv,it is used to produce acid yellow 1, acid orange 20,coal dved black 11, solvent red 3,solvent orange5,oil palmGB,etc.