English
SODIUM DISULFITE DRY, EXTRA PURE, DAB, P 1KG
Rp 1.156.000
Assay (complexometric) 99.0 - 102.0 %
Identity passes test
Appearance of solution passes test
Insoluble matter ≤ 0.01 %
Acidity or alkalinity passes test
pH-value (5 %; water, 25 °C) 4.5 - 8.5
Sulfate (SO₄) ≤ 0.005 %
Heavy metals (ACS) ≤ 5 ppm
Al (Aluminium) ≤ 0.0001 %
Ba (Barium)
≤ 0.003 %
passes test
Cu (Copper) ≤ 0.0005 %
Fe (Iron) ≤ 0.0003 %
K (Potassium) ≤ 0.01 %
Mg (Magnesium) ≤ 0.005 %
Na (Sodium) ≤ 0.01 %
NH₄ (Ammonium) ≤ 0.005 %
Sr (Strontium) ≤ 0.05 %
Magnesium and alkali metals ≤ 0.5 %
Oxidizing substances (as NO₃) ≤ 0.003 %
