Merck 1050439050 碘化钾, Emsure 分析适用 (KI, 纤维纸箱 50 kg)

CAS number: 7681-11-0

EC number: 231-659-4

Hill Formula: IK

Molar Mass: 166.01 g/mol

Assay (argentometric): ≥ 99.5 %

Assay (argentometric; calculated on dried substance): 99.5 - 100.5 %

Identity: passes test

Appearance of solution: passes test

Alkaline impurities: passes test

pH-value (5 %; water): 6 - 8

Chloride and Bromide (as Cl): ≤ 0.01 %

Iodate (IO₃): ≤ 0.0003 %

Phosphate (PO₄): ≤ 0.001 %

Sulfate (SO₄): ≤ 0.001 %

Thiosulfate (S₂O₃): passes test

Total nitrogen (N): ≤ 0.001 %

Heavy metals (as Pb): ≤ 0.0005 %

As (Arsenic): ≤ 0.00001 %

Ba (Barium): ≤ 0.002 %

Ca (Calcium): ≤ 0.001 %

Cu (Copper): ≤ 0.0002 %

Fe (Iron): ≤ 0.0002 %

Mg (Magnesium): ≤ 0.001 %

Na (Sodium): ≤ 0.03 %

Pb (Lead): ≤ 0.0002 %

Reducing substances: passes test

Loss on Drying (105 °C): ≤ 0.5 %