Ammonium hexafluoroaluminate

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Structural formula
Structural formula of ammonium hexafluoroaluminate
General
Surname Ammonium hexafluoroaluminate
other names
  • Ammonium cryolite
  • Ammonium aluminum fluoride
Molecular formula (NH 4 ) 3 [AlF 6 ]
Brief description

white odorless solid

External identifiers / databases
CAS number 7784-19-2
EC number 232-052-7
ECHA InfoCard 100.029.138
PubChem 24565
Wikidata Q1014242
properties
Molar mass 195.09 g mol −1
Physical state

firmly

density

1.78 g cm −3

solubility

soluble in water (7.7 g l −1 at 25 ° C)

safety instructions
GHS labeling of hazardous substances
06 - Toxic or very toxic

danger

H and P phrases H: 301-311-330
P: 260-301 + 310-304 + 340-320-330-361-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ammonium hexafluoroaluminate is a chemical compound from the group of ammonium compounds and aluminates .

Extraction and presentation

Ammonium hexafluoroaluminate can be obtained by reacting ammonium fluoride with aluminum hydroxide.

properties

Ammonium hexafluoroaluminate is a white, odorless solid that is soluble in water. It is thermally stable up to over 100 ° C.

use

Ammonium hexafluoroaluminate is used to make aluminum fluoride .

Individual evidence

  1. a b c d e f g h data sheet Ammonium hexafluoroaluminate, 99.8% (metals basis) from AlfaAesar, accessed on September 24, 2013 ( PDF )(JavaScript required) .
  2. a b c Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 239.