Purity: (same/more than) 99.0%
Insoluble in dilute HCl: (same/less than) 0.02%
Carbon Compounds: (same/less than) 0.01%
Chloride: (same/less than) 0.005%
Nitrogen Compounds: (same/less than) 0.002%
Sulfur Compounds: (as SO4): (same/less than) 0.02%
Free Alkali (color): To Pass Test
Sodium: (same/less than) 0.05%
Potassium: (same/less than) 0.02%
Calcium: (same/less than) 0.01%
Iron: (same/less than) 0.05%