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Sodium thiosulfate
Testing item Analytically pure indicators
Content(Na2S2O3•5H2O)% ≥99.0
PH(50g/L solvent,25?): 6.0~7.5
Clarity Test Qualified
Water insoluble,% ≤0.005
Sodium Chloride(Cl),% ≤0.02
Sulfate (SO4),% ≤0.05
Sulphide(S),% ≤0.00025
Total nitrogen (N),% ≤0.005
(Mg),% ≤0.001
(Ca),% ≤0.003
(Fe),% ≤0.0005
Heavy metal(Pb),% ≤0. 0005
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