三水合醋酸钠—五水合硫代硫酸钠体系相图

PHASE DIAGRAM OF THE SODIUM ACETATE TRIHYDRATE——SODIUM THIOSULFATE PENTAHYDRATE

用步冷曲线法,部分用DSC法对CH_3COONa·3H_2O—Na_2S_2O_3·5H_2O体系进行测定。结果表明该体系相图属低共熔型。对所得结果进行了讨论。

The cooling curves and DSC methods were used to construct the phase diagram of the title system, which iseutectic type. Theeuteetic point occurs at 41℃ and 28.0 wt% Na_2S_2O_3·5H_2O The Quasibinary behavior of the CH_3COONa·3H_3O-Na_2S_2O_3·5H_2O was discussed.