Process of stabilization of dibasic calcium phosphate dihydrate

Details Process of stabilization of dibasic calcium phosphate dihydrate Process of stabilization of dibasic calcium phosphate dihydrate

1975-12-01

1978-09-26

Vertiz, O. R.

Chemistry of inorganic compounds

With additive

Including anticaking or antihygroscopic function

423308, 423311, 424 57, 423265, C01B 1516, C01B 2526

Patent

active

041170903

ABSTRACT:
A process for stabilizing dibasic calcium phosphate dihydrate against hydrolysis comprising treating an aqueous suspension of dibasic calcium phosphate dihydrate at a pH of from 5 to 10 with an azacycloalkane-2,2-diphosphonic acid of the formula ##STR1## WHEREIN N IS AN INTEGER FROM 3 TO 5, OR A WATER-SOLUBLE SALT THEREOF, IN AN AMOUNT OF FROM 0.01% TO 5% BY WEIGHT WITH REFERENCE TO THE DIBASIC CALCIUM PHOSPHATE DIHYDRATE; AS WELL AS TOOTH CLEANING PREPARATIONS CONTAINING THE STABILIZED DIBASIC CALCIUM PHOSPHATE DIHYDRATE.

REFERENCES:
patent: 3941772 (1976-03-01), Ploger et al.

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