Purity: (same/more than) 95%
Appearance: White powder
Insoluble in Dilute HCl: (same/less than) (same/less than)2.5%
Loss on Drying: (same/less than) 2%
Arsenic: (same/less than) 0.00008%
Heavy Metals (as Pb): (same/less than)0.002%
Magnesium: (same/less than)2.4%