Abstract

Thermal stability of salt hydrates of sodium cation namely sodium hydroxide monohydrate, sodium acetate trihydrate, sodium thiosulphate pentahydrate, sodium carbonate decahydrate, sodium sulphate decahydrate and di-sodium hydrogen phosphate dodecahydrate has been evaluated at elevated temperatures using thermogravimetric technique. The energy of activation of dehydration of these salt hydrates have been reported. A new criterion based upon the ratio of percent water loss and energy of activation has been reported to determine the relative thermal stability of sodium salt hydrates.

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