Inorganic Analytical Perchloric Acid and Salts ACS Reagent Acids 2478 PERCHLORIC ACID PERCHLORIC ACID 40% REAGENT HClO₄ 100.46 7601,90,3 7601903 90,3 760190,3 7601 90 3 8/5.1/II 3-0-1 1.330 Meets all American Chemical Society specifications except for assay, 55071 63.90 500 ML 55072 150.00 2.5 L 55073 239.80 6 X 500 ML 55074 519.50 4 X 2.5 L 55076 0.00 200 L Assay 39.0-41.0% Residue after ignition 0.003% Silicate + phosphate 0.0005% Chloride 0.001% Sulfate 0.001% Nitrogen compounds (as N) 0.001% Heavy metals (as Pb) 0.0001% Iron 0.0001% Color (APHA) 10 max