Process for preparing fluorapatite

Details Process for preparing fluorapatite Process for preparing fluorapatite

1977-06-02

1979-06-05

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Halogen containing

423305, 423308, C01B 2510, C01B 1516, C01B 2526

Patent

active

041573781

ABSTRACT:
The process of preparing analytically pure fluorapatite comprising reacting dicalcium phosphate dihydrate with hydrogen fluoride in aqueous solution, at a pH of from about 5 to about 8, at from about room temperature for about 7 days to about 100.degree. C. for about 2 days, the amount of fluoride ion being from about stoichiometric to about 1.1 times the stoichiometric amount of dicalcium phosphate dihydrate whereby solid analytically pure fluorapatite is formed.

REFERENCES:
patent: 2555656 (1951-06-01), Plusje et al.
patent: 3505012 (1970-04-01), Dale et al.
patent: 3679360 (1972-07-01), Rubin et al.
patent: 3737516 (1973-06-01), Jenner
Chemical Abstracts, vol. 80, 1974, 128446u.
Chemical Abstracts, vol. 82, 1975, 67503c.
Chemical Abstracts, vol. 82, 1975, 25778r.

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