Non-polar 1 : Compounds that do not have a dipole moment, i. e. the molecules of which are not affected in a uniform electrical field, e. g. methane CH4 and carbon tetrachloride substances
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}
