Sodium Cryolite

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Sodium Cryolite. The characteristics of granular Sodium Cryolite are:
1. Good fluidity, dust pollution, suitable for mechanized blanking.
2. High yield in electrolytic production, can reduce the cost of electrolytic aluminum.
3. Molecular ratio between 2.5 and 3.0, especially suitable for the opening of electrolytic aluminum.
4. Particles Mostly 1~10mm.
The characteristics of powdered Sodium Cryolite are:
1. Can achieve higher particle size, usually more than 200 mesh;
2. Molecular ratio can reach 1.75~2.5, with good adjustability;
3. Ultra-fine products, 325 mesh pass rate is 98% or more, can meet special industries requirements for Sodium Cryolite.

Application

Sodium cryolite is used mainly as a solvent in the electrolytic production of aluminum as it effectively lowers down the melting point of alumina. It is used in the enamel and glass industries,as a filler in bonded abrasives, in making salts of aluminum and sodium  and porcelaneous glass and in the insecticides.Sodium cryolite is a relatively safe fruit and vegetable insecticide.

Packing:

Sodium Cryolite is supplied as a dry powder in 25kg plastic woven bags and 1000kg big bag with shrink.

Product details:

CAS No.: 13775-53-6

Purity:  98% Min

Appearance: White crystal or powder

Specifications

Sodium Cryolite

Assay

98%

pH Value

7.5 – 9.0

Fluorine Value as F

54.28%

Aluminium

12.68%

Free HF

0.00%

Silica as SiO2

0.60%

Chloride as Cl

0.00%

Sulphate as SO4

0.00%

Iron as Fe

0.05%

Lead Pb

0.02%

Specific Gravity

2.95 to 3.0.

Molar Mass

209.9 g mol-1

Molecular Formula

Na3AlF6

Appearance

Colorless to white, Monoclinic crystals

Melting Point

1012 °C

Solubility

Soluble in AlCl3 solution, soluble in H2SO4

Solubility in Water

Insoluble in water

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