Compounds with nitrogen function (excl. aminefunction compounds; oxygenfunction aminocompounds; quaternary ammonium salts and hydroxides; lecithin and other phosphoaminolipids; carboxyamidefunction compounds; amidefunction compounds of carbonic acid; carboxyimidefunction, iminefunction or nitrilefunction compounds; diazo, azo or azoxycompounds; organic derivatives of hydrazine or of hydroxylamine and isocyanates)