What is the pH of fluorosilicic acid?
6.5-8.5
At the pH of drinking water (6.5-8.5) and at the concentration usually used for fluoridation (1 mg fluoride/L), the degree of hydrolysis is essentially 100%. Fluorosilicic acid is a moderately strong acid that can corrode glass and stoneware.
What is fluorosilicic acid used for?
It is used in water fluoridation, metal sterilization, electroplating, animal hide tanning, and glass etching.
What is FSA acid?
Hexafluorosilicic acid (H2SiF6 or FSA) is a hazardous and corrosive byproduct of the production of hydrogen fluoride (HF) and phosphate-containing fertilizers. Large amounts of this industrial waste are produced every year, approximately more than 2 million tons.
How do you neutralize fluorosilicic acid?
A better environmental alternative is to use scrubbers to remove fluorides as fluosilicic acid prior to condensing the vapors in barometric condensers. If a market cannot be found for the fluosilicic acid, it can then be neutralized with phosphate rock to produce a weak phosphoric acid.
What is the difference between Hydrofluorosilicic acid and fluorosilicic acid?
What Is Hydrofluorosilicic Acid? Hydrofluorosilicic acid is a chemical often known by other names like fluorosilicic acid and fluosilicic acid. It’s often abbreviated to HSA or FSA. The acid is a colorless chemical that is created when you take phosphoric rock from the ground and convert it to soluble fertilizer.
Where does fluorosilicic acid come from?
Hydrofluorosilicic acid is a chemical often known by other names like fluorosilicic acid and fluosilicic acid. It’s often abbreviated to HSA or FSA. The acid is a colorless chemical that is created when you take phosphoric rock from the ground and convert it to soluble fertilizer.
What type of compound is sodium fluoride?
inorganic ionic compound
Sodium fluoride is an inorganic ionic compound, dissolving in water to give separated Na+ and F− ions.
What is the percentage composition of the elements in sodium fluoride?
Technical grades are 90% and 95% NaF, light (37 cu in/lb) and dense (23 cu in/lb), and 98%. The impurities are mainly sodium and aluminum fluosilicates.