Sodium hexafluoroaluminate

Sodium hexafluoroaluminate
Names
	Other names Sodium fluoroaluminate; Cryolite; Kryolite; Aluminate(3-), hexafluoro-, trisodium, (OC-6-11)-
Identifiers
CAS Number	13775-53-6 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:39289 ;
ChemSpider	11431435 ;
PubChem CID	159692;
UNII	5ZIS914RQ9 ;
CompTox Dashboard (EPA)	DTXSID90872955 ;
	InChI InChI=1S/Al.6FH.3Na/h;61H;;;/q+3;;;;;;;3+1/p-6 Key: REHXRBDMVPYGJX-UHFFFAOYSA-H ; InChI=1/Al.6FH.3Na/h;61H;;;/q+3;;;;;;;3+1/p-6/rAlF6.3Na/c2-1(3,4,5,6)7;;;/q-3;3*+1 Key: REHXRBDMVPYGJX-ZWHJLPLDAC;
	SMILES [Na+].[Na+].[Na+].F[Al-3](F)(F)(F)(F)F;
Properties
Chemical formula	Na3AlF6
Molar mass	209.94 g/mol
Appearance	white solid
Density	2.9 g/cm3, solid
Melting point	950 °C (1,740 °F; 1,220 K)
Boiling point	decomposes
Solubility in water	0.04% (20°C)
Vapor pressure	essentially 0
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H332, H372, H411
Precautionary statements	P260
	Lethal dose or concentration (LD, LC):
LDLo (lowest published)	600 mg/kg (guinea pigs, oral)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 2.5 mg/m3
REL (Recommended)	TWA 2.5 mg/m3
IDLH (Immediate danger)	250 mg/m3 (as F)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sodium hexafluoroaluminate is an inorganic compound with formula Na₃ Al F₆. This white solid, discovered in 1799 by Peder Christian Abildgaard (1740–1801), occurs naturally as the mineral cryolite and is used extensively in the industrial production of aluminium metal. The compound is the sodium (Na⁺) salt of the hexafluoroaluminate (AlF₆³⁻) ion.

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