Sodium Thiosulfate anhydrous (Reag. Ph. Eur.) for analysis

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Sodium Thiosulfate anhydrous (Reag. Ph. Eur.) for analysis
Content: 1000 GRM
Physical Description:
solid
Quality Name: for analysis
Specification: Minimum assay (Iodom.)@99.0%§pH of 5% solution@6.0-8.4§CHAR(13) + CHAR(10) Maximum limit of impurities@§Insoluble matter in H2O@0.01 %§Loss on drying at 105°C@1%§Chloride (Cl)@0.05%§Sulfide (S)@0.0005 %§Sulfate and sulfite (as SO4)@0.5%§Ca@0.004 %§Cd@0.001 %§Co@0.001 %§Cu@0.001 %§Fe@0.001 %§K@0.01 %§Ni@0.001 %§Pb@0.001 %§Zn@0.001 %