CALCIUM SECONDARY PHOSPHATE ANHYDRIDE PARTICLE AND METHOD FOR PRODUCING THE SAME

摘要

The present invention provides anhydrous dicalcium phosphate particles which satisfies the conflicting requirements of the improvement of handling properties such as high flowability and a small bulk and the improvement of tableting properties at the same time during preparation and a method of producing the same. The method of producing anhydrous dicalcium phosphate by heating water suspensions of a phosphoric acid compound and a calcium compound at 50 to 100°C, comprises the step of:
heating the phosphoric acid compound and the calcium compound at 75°C or higher in advance to carry out a neutralization reaction in the presence of an alkali to obtain agglomerated anhydrous dicalcium phosphate particles.