The Effect of the Specific Surface Area of Heavy Magnesium Carbonate on its Tableting Properties

Abstract

Heavy magnesium carbonates, either granules or spray dried powders were prepared at five different temperatures respectively. It has been found that the specific surface area of the magnesium carbonates prepared at lower temperatures is higher than that prepared at higher temperatures. The moisture adsorption (%) of magnesium carbonates and the crushing strength of the magnesium carbonate compacts prepared at five pressure ranges showed linear relationships with the specific surface area of the magnesium carbonates. However, Heckel plots indicated that magnesium carbonates prepared at higher temperatures were more compressible.