Two phases in a commercial anhydrous sodium
201437 ensp 0183 enspTwo phases in a commercial anhydrous sodium carbonate by air contact A Harabor 1 P Rotaru N A Harabor2 1Department of Physics University of Craiova 13 A I Cuza Street RO200585 Craiova Romania 2Dept of Physics flPolitehnicaflUniversity of Bucharest 313 Splaiul Independentei RO060042 Bucharest Romania Abstract