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Potassium aluminium fluoride

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Potassium aluminium fluoride
Names
IUPAC name potassium tetrafluoridoaluminate
Other names potassium tetrafluoroaluminate
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.971 Edit this at Wikidata
EC Number
  • 238-485-8
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/Al.4FH.K/h;4*1H;/q+3;;;;;+1/p-4Key: SKFYTVYMYJCRET-UHFFFAOYSA-J
SMILES
  • .F(F)(F)F
Properties
Chemical formula KAlF4
Molar mass 142
Appearance White solid
Density 2.9 g/cm
Melting point > 600 °C (1,112 °F; 873 K)
Solubility in water 2 g/L
Hazards
GHS labelling:
Pictograms GHS07: Exclamation markGHS08: Health hazard
Signal word Danger
Hazard statements H315, H319, H332, H335, H362, H372, H412
Precautionary statements P201, P260, P261, P263, P264, P270, P271, P273, P280, P302+P352, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P314, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Safety data sheet (SDS) Solvay MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Potassium aluminium fluoride (PAF, chemical formula KAlF4) is an inorganic compound.

This compound is used as flux in the smelting of secondary aluminium, to reduce or remove the magnesium content of the melt. The main environmental issue that arises from using PAF is the production of fluoride gases. Calcium hydroxide is widely used to suppress the fluorides produced but in most cases fails to remove it sufficiently.

PAF is also present in a wide range of products for the metals industry as a fluxing agent within additives to help its dispersion within a charge.

It is also used as an insecticide.

A single natural occurrence has been reported at a burning coal bank at Forestville, Pennsylvania, as an unnamed mineral.

References

  1. "potassium aluminium fluoride". AccessScience. Archived from the original on 2011-05-18.
  2. "Unnamed (K-Al Fluoride)". mindat.org.
Potassium compounds
H, (pseudo)halogens
chalcogens
pnictogens
B, C group
transition metals
organic
Aluminium compounds
Al(I)
Organoaluminium(I) compoundsAl(C5(CH3)5)
Al(II)
Al(III)
Alums
Organoaluminium(III) compounds
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