SYNTHETIC CRYOLITE

SYNONYM: SODIUM FLUOROALUMINATE
Molecular formula: Na3AlF6

molecular weight: 209.94

1> Properties:

it is crystalline white powder. Slightly soluble in water, density 2.95-3, melting point 1000oC, easily absorbing water and become damp, decomposed by strong acids like sulfuric acid and hydrochloride, then producing hydrofluoric acid and relevant aluminum salt and sodium salt.

2> Uses:

 mainly used in flux of electrolytic aluminum, pesticide, flux of ceramic colors, anti-rubbing filling agent of resin and rubber, electrolytic liquid for production of iron alloy rimmed steel and furnish of emery wheel.

3> Packing:

package can be 25/1000kg plastic woven bags with shrink film, or according to customer's requirements.

4> Specifications: GB4291-1999

Ingredient Super First grade Second grade
F%≥ 53 53 53
Na% ≥ 32 32 32
Al≥ 13 13 13
H2O%≤ 0.4 0.5 0.8
SiO2≤ 0.25 0.36 0.4
Fe2O3%≤ 0.05 0.08 0.10
SO4%≤ 0.7 1.20 1.30
P2O5%≤ 0.02 0.03 0.03
Ignite on 550oC≤ 2.5 3.00 3.00
CaO%≤ 0.10 0.15 0.20