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Cryolite

? Molecular formula:Na3AlF6
? Molecular weight :209.94
? Properties:Crystal white powder. Slightly soluble in water, density 2.95~3, melting point 1000℃
?Use:Electrolytic aluminium flux, pesticide, flux, auxiliaries.
?GB/T4291-1999

Chemical Constituents

Special grade

First order

Second grade

Fluorine(F)% ≥

53

53

53

Sodium (Na)%≤

32

32

32

Aluminum (Al)%≥

13

13

13

Water(H2O)%≤

0.4

0.5

0.8

Silica(SiO2)%≤

0.25

0.36

0.4

Ferric oxide (Fe2O3)%≤

0.05

0.08

0.10

Sulfate(SO4)% ≤

0.7

1.20

1.30

Phsophorus pentoxide(P2O5)% ≤

0.02

0.03

0.03

Ignition loss 550,30MIN ≤

2.5

3.00

3.00

Calcium oxide% ≤

0.10

0.15

0.20

products
Sodium fluoride
Cryolite
White carbon black
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