Class	Chemical Composition(%)
	NaF	SiO2	Na2CO3	SO42-	HF	Water-insoluble	H2O
	Not less than	Not more than
first class	98	0.5	0.5	0.3	0.1	0.7	0.5
second	95	1.0	1.0	0.5	0.1	3	1.0
third	84	—	2.0	2.0	0.1	10	1.5

 

 

physical properties：White crystal or powder. Relative density quantity is 2.558, the melting point is 993℃, boiling point is 1704℃, can solute in water, and slightly solute in alcohol, poisonous, it’s aqueous solution can corrode glass.

Applications：Sodium Fluoride is used in the manufacture of effervescing steel, and the smelting and refining of light metals. It is also used in fluorination of drinking water, as a wood preservative, an adhesive preservative. An insecticide, a protective coating for metals, a pickle for steels and other metals, a flux for soldering and welding, as well as a flux and pacifier for ceramic, glass and porcelain enamel.

Packing：In 50kg PP bags, Lined with high-pressure plastic film, or according to contract’s requirements.