Naftalin (az lot. naphtha — neft) S|0Nv, karbogidridi aromati. Kristallhoyash berang, bui khos dorad; t gudozish 80,3° S, t jush. 218° Selsiya. Zahrnok, zichiash 1,1517 g/sm! (22° S). Dar spirt, efir, benzol nagz, ammo dar ob bad hal meshavad. Naftalinro az zifti angishtsang va karbogidridhoi neft hosil mekunand.
Az Naftalin angidrida ftalat, Moddahoi rangubori (naftolho, naftilaminhoyu sulfokislotahoi onho) va gayra hosil mekunand. Gomologhoi Naftalin dar zifti angisht va metilnaftalinho niz mavjudand. Hosilai Naftalin polimetalnaftalinro chun insektisidkho, metilnaftalinkhoro chun omili tanzimi sabzishi rastani va namakkhoi sulfokislotap Naftalinro boshad, hamchun emulgatorho ba kor mebarand.