Process for the preparation of sodium fluoride

Details Process for the preparation of sodium fluoride Process for the preparation of sodium fluoride

1999-07-30

2000-08-22

Dunn, Tom

Chemistry of inorganic compounds

Halogen or compound thereof

Binary fluorine containing compound

4234991, 23301, C01D 302

Patent

active

061067946

ABSTRACT:
Process for the preparation of sodium fluoride from sodium hydroxide solution and hydrogen fluoride, characterized in that at least 45% strength by weight, in particular 50% strength by weight, sodium hydroxide solution and anhydrous hydrogen fluoride are introduced separately into a saturated NaF solution in which 4 to 50% by weight, preferably 5 to 30% by weight, solid NaF are suspended and the temperature of which is in the range from 20 to 80.degree. C., preferably 30 to 60.degree. C.

REFERENCES:
patent: 3660019 (1972-05-01), Predikant et al.
patent: 5470559 (1995-11-01), Grolman et al.
patent: 5531975 (1996-07-01), Erickson et al.
Remy, Lehrbuch der Anor. Chem. [Textbook of Inorganic Chemistry] vol. 1, 11.sup.th edition, Leipzig (month unavailable) 1960, pp. 933-934 Halogenide: Allegmeines.--Fluoride.

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