Calcium hydrogen phosphate, a method for preparing it, and...

Details Calcium hydrogen phosphate, a method for preparing it, and... Calcium hydrogen phosphate, a method for preparing it, and...

C - Chemistry, Metallurgy

01

B

C01B 25/32 (2006.01) A61K 47/02 (2006.01)

Patent

CA 2127740

The object of the present invention is to prepare a calcium hydrogen phosphate that has excellent binding properties, a large oil adsorption capacity and a specific surface area, and is therefore suitable as an excipient. A scale-like calcium hydrogen phosphate is prepared by reacting phosphoric acid with an alkaline calcium compound such as quick lime, in the presence of a multivalent organic acid with coordinating ability, such as citric acid, to obtain a columnar calcium hydrogen phosphate, and then hydrothermally treating the obtained columnar calcium hydrogen phosphate at a temperature of 60° C or higher.

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