Process of stabilization of anhydrous dibasic calcium phosphate

Details Process of stabilization of anhydrous dibasic calcium phosphate Process of stabilization of anhydrous dibasic calcium phosphate

1975-12-01

1978-08-22

Vertiz, O. R.

Chemistry of inorganic compounds

With additive

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

Patent

active

041089618

ABSTRACT:
A process for stabilizing anhydrous dibasic calcium phosphate against reaction with fluorine ions comprising treating an aqueous suspension of anhydrous dibasic calcium phosphate 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 anhydrous dibasic calcium phosphate; as well as tooth cleaning preparation containing the stabilized anhydrous dibasic calcium phosphate.

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

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