Sodium Thiosulfate 5-hydrate (Reag. USP) for analysis, ACS

Sodium Thiosulfate 5-hydrate (Reag. USP) for analysis, ACS
Content: 25 KGM
Physical Description:
solid
Quality Name: for analysis, ACS
Specification: Assay (Iodom.)@99.5-101.0%§pH of 5% solution@6.0-8.4§CHAR(13) + CHAR(10) Maximum limit of impurities@§Insoluble matter in H2O@0.005 %§Chloride (Cl)@0.02%§Nitrogen compounds (as N)@0.002%§Sulfide (S)@0.0001 %§Sulfate and sulfite (as SO4)@0.1%§Heavy metals (as Pb)@0.0005%§Ca@0.002 %§Cd@0.0005 %§Co@0.0005 %§Cr@0.0005 %§Cu@0.0005 %§Fe@0.0005 %§K@0.005 %§Mg@0.001 %§Mn@0.0005 %§Ni@0.0005 %§Pb@0.0005 %§Zn@0.0005 %