Aluminum Fluoride

aluminum fluoride

[ə′lüm·ə·nəm ′flu̇r‚īd]

(inorganic chemistry)

AlF₃·3½H₂O A white, crystalline powder, insoluble in cold water.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Aluminum Fluoride

 

(A1F₃), a salt; colorless crystals with a density of 3,100 kg/m³. It sublimates upon heating. It is only very slightly soluble in water (0.559 g in 100 g H₂0 at 25°C) and does not react with alkalies or acids (except boiling sulfuric acid). Aluminum fluoride forms numerous complex compounds—for example, Na₃AlF₆, so-called cryolite, which is widely used in the aluminum industry. Aluminum fluoride can be obtained by passing HF over Al or A1₂0₃ at red heat or by other methods. It is used as a component part of an electrolyte used for obtaining and purifying aluminum.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.