Patent Number: 6,251,358

Title: Process for the preparation of sodium fluoride

Abstract: Process for the preparation of sodium fluoride from sodium hydroxide solution and hydrogen fluoride or hydrofluoric acid, characterized in that <45% strength by weight, preferably 20 to 40% strength by weight, sodium hydroxide solution and hydrogen fluoride or hydrofluoric acid are introduced separately into a saturated NaF solution in which 4 to 50% by weight, preferably 5 to 30% by weight, of solid NaF are suspended and whose temperature is in the range from 20 to 80.degree. C., preferably 30 to 60.degree. C.

Inventors: Lailach; Gunter (Krefeld, DE), Bulan; Andreas (Langenfeld, DE), Buss; Gunter (Leverkusen, DE)

Assignee: Bayer Aktiengesellschaft

International Classification: C01D 3/00 (20060101); C01D 3/02 (20060101); C01D 003/02 ()

Expiration Date: 06/26/2018