Ammonium Chloride for Chemical Reagent Brand: MERCK Origin: Germany Katalog: 1.01145 Kemasan: 1Kg, 500g. CATATAN ANALISIS: Assay (argentometric): ≥ 99.8 % Assay (argentometric; calculated on dried substance): 99.0 – 100.5 % Identity: passes test Appearance of solution: passes test Insoluble matter: ≤ 0.005 % Acidity or alkalinity: passes test pH-value (5 %; water, 25 °C): 4.5 – 5.5 Bromide, Iodide (Br,I): passes test Nitrate (NO₃): ≤ 0.0005 % Phosphate (PO₄): ≤ 0.0002 % Sulfate (SO₄): ≤ 0.002 % Heavy metals (ACS): ≤ 0.0005 % Ca(Calcium): ≤ 0.0005 % Cu(Copper): ≤ 0.0002 % Fe(Iron): ≤ 0.0002 % K (Potassium): ≤ 0.005 % Mg (Magnesium): ≤ 0.0005 % Na(Sodium): ≤ 0.005 % Ni (Nickel): ≤ 0.0001 % Pb (Leads): ≤ 0.0001 % Zn (Zinc): ≤ 0.0002 % Loss on Drying (105°C): ≤ 1.0 % Residue on ignition (as sulfate): ≤ 0.01 % Corresponds to ACS,ISO,Reag. Ph