Sodium fluoride is an inorganic compound that comes from both nature and factories.
I. Nature:
In nature, sodium fluoride mainly comes from minerals such as fluorite, cryolite and fluorapatite. These minerals are often used as raw materials for the extraction of sodium fluoride in industry.
Fluorite
Fluorite, with the chemical formula CaF₂, is the mineral form of calcium fluoride.
It is widely found in nature and is one of the most important raw materials for the extraction of sodium fluoride.
Cryolite
Cryolite, with the chemical formula Na₃AlF₆, is a fluoride mineral of aluminum.
It is also used as one of the raw materials for the extraction of sodium fluoride.
Fluorapatite
Fluorapatite, with the chemical formula 3Ca₃(PO₄)₂-CaF₂ , is a fluorinated phosphate mineral.
It is also used as a raw material for the extraction of sodium fluoride
Water
Sodium fluoride does not exist in a free state in natural water, but in the form of compounds.
When groundwater comes into contact with these fluoride-containing minerals, it dissolves the fluoride compounds in it, resulting in a certain amount of fluoride in the groundwater.
The fluoride content of groundwater can generally be as high as 0.4 to 0.5 mg/L, and sometimes as high as 10 mg/L or more. In contrast, the fluoride content of surface water is lower, at about 0.01 to 0.3 mg/L.
Codex Alimentarius Commission (CAC): The Codex Standard for Natural Mineral Waters stipulates that products containing more than 1 mg/L of fluoride should be labeled “Contains Fluoride”. If the level is more than 1.5 mg/L, it should be labeled “This product is not suitable for children under 7 years of age”.
II Chemical plants
Sodium fluoride plant
We have opened a sodium fluoride production line to produce toothpaste grade sodium fluoride. The annual output can reach 8,000 tons.
Other chemical plants
The content of the trim collected through reactor removal is generally between 80% and 97%, the color is between white or grey, and the silicon content is generally between 1% and 3%.
- Pharmaceutical intermediates plants: As a by-product of organic materials down the sodium fluoride, the content is high, usually between 90%-99%. It usually does not contain silicon. Its color is white, yellow, red and so on.
- Sodium silicate (water glass effervescent soda ash, Na2O-nSiO2) plants: Sodium fluoride is the by-product. The content is usually between 80%-92%, grayish in color, with high silicon content.
- Waste acid treatment: Prepared by acid and alkali neutralization method. The sodium monofluoride content is between 90%-99%, without silicon. Its color is white, etc. with the influence of impurities inside the waste acid.
Sodium fluoride from these sources can be further processed into products of different purities and as per sodium fluoride uses. The grades are including toothpaste-grade sodium fluoride, analytically pure sodium fluoride, reagent-grade sodium fluoride, high purity grade sodium fluoride, battery-grade sodium fluoride, etc.
