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SODIUM THIOSULPHATE Extra Pure 500g

SODIUM THIOSULPHATE Extra Pure 500g

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Na2S2O3.5H2O M.W. 248.17 1 kgAssay(by iodometry) min 99.0% 5 kgpH(5% water) 6.0 - 8.4Chloride(Cl) max 0.01%Sulphate &sulphite max 0.2%Sulphide(S) max 0.0005%Heavy metals(as Pb) max 0.0005%Arsenic(As) max 0.0002%Calcium(Ca) max0.01%Iron(Fe) max 0.005%Potassium(K) max 0.02%Magnesium(Mg) max 0.005%

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