Thermal decomposition of strontium nitrite monohydrate.

Themogravimetry and differential thermal analysis in N(2) and mass spectrographic evolved gas analysis in vacuum were performed on Sr(NO(2))(2)H(2)O. The results in N(2) indicate a single step loss of water around 150C followed by a solid(1) - solid (2) phase transition in the anhydrous Sr(NO(2)) around 265C and subsequent melting at about 365C. There is a very slight decomposition commencing even before melting which becomes more significant at 500C and very rapid above 650C. The final product is cubic SrO as identified by power x-ray diffraction. EGA studies of the decomposition in vacuum were consistent but indicated lower temperatures of dehydration and particularity of decomposition.