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Chemistry for Sustainable Development

2017 year, number 4

Mechanochemical Synthesis of Sodium Thiosulphate Pentahydrate

F. KH. URAKAEV
Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
E-mail: urakaev@igm.nsc.ru
Keywords: sulphur, sodium sulphite, solution, suspension, mechanical activation, synthesis, sodium thiosulphate pentahydrate
Pages: 410-414

Abstract

Mechanochemical synthesis of sodium thiosulphate pentahydrate (Na2S2O3•5H2O) was carried out for the first time in a planetary ball mill by mechanical activation of a suspension of sodium sulphate (Na2SO3) and sulphur (S). The degree of Na2SO3 + S = Na2S2O3 reaction in suspension solution at soft and short mechanical activation conditions is almost 95 %, as established by methods of iodometric titration, X-ray phase and thermal analysis.

DOI: 10.15372/CSD20170411