... .9% Cesium carbonate Color:White Crystal, Chemical Formula Cs2CO3, Molecular Weight 325.82, CAS: 534-17-8 EINECS: 208-591-9 Chemical Analysis ... :Cs2CO3:99.9%, Li0.0015%, Na0.01% , Rb0.02%, Ca0.0015 ... %,Ba0.005%, Fe0.001%, Mg 0.0005%, Mn 0.0005%,K0.01 ...