Sodium thiosulfate 500gm merck german

Formula: Na2S2O3.5H2O
Assay (Iodometric) 99.5%
In Water Insoluble Matter Max 0.005%
pH-Value (5% ; water) 6.0-8.4
Chloride (Cl) Max 0.008%
Sulfate and Sulphate (as SO4) Max 0.01%
Total Nitrogen (N) Max 0.002%
Ca (Calcium) Max 0.002%
Cu (Copper) Max 0.0005%
Fe (Iron) Max 0.001%
K (Potassium) Max 0.001%
Mg (Magnesium) Max 0.001%
Pb (Lead) Max 0.0005
Corresponds to ACS, ISO
Brand: Merck
Origin: Germany