What is Hydrofluosilicic acid used for?
It is used in water fluoridation, metal sterilization, electroplating, animal hide tanning, and glass etching.
What is Hexafluorosilicic acid used for?
Hexafluorosilicic acid and hexafluorosilicates are the most commonly used agents in drinking water fluoridation and it has been claimed that incomplete dissociation of these agents in drinking water may result in human exposure to these chemicals.
Is Hydrofluorosilicic acid the same as hydrofluoric acid?
In water, hexafluorosilicic acid readily hydrolyzes to hydrofluoric acid and various forms of amorphous and hydrated silica (“SiO2”). At the concentration usually used for water fluoridation, 99% hydrolysis occurs and the pH drops.
What is the pH of Hydrofluosilicic acid?
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.
Where does Hydrofluosilicic acid come from?
The HFSA used in this way is a by-product of the manufacture of phosphate fertilizers, and is formed when phosphate containing ores, which also contain fluoride and silicon compounds among other substances, are heated with sulfuric acid.
Is fluorosilicic acid flammable?
ICSC 1233 – FLUOROSILICIC ACID. Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings, use appropriate extinguishing media.
Is fluoride the same as fluorosilicic acid?
The phosphoric and fluoride gases that are released in the process are then separated. The fluoride gas is captured and used to create fluorosilicic acid.
What is the name of H2SiF6?
FLUOSILICIC ACID tetrafluorosilane
Fluosilicic acid
| PubChem CID | 11137276 |
|---|---|
| Molecular Formula | F6H2Si |
| Synonyms | FLUOSILICIC ACID tetrafluorosilane;dihydrofluoride Fluorosilicic acid solution H2SiF6 AKOS015903679 More… |
| Molecular Weight | 144.091 |
| Component Compounds | CID 24556 (Silicon tetrafluoride) CID 14917 (Hydrofluoric acid) |
Is Hydrofluorosilicic acid harmful?
Hydrofluorosilicic acid can be the most dangerous chemical at your local water treatment plant. It can release hydrogen fluoride when it evaporates, it’s corrosive, and it can damage the lungs if breathed in, making it especially dangerous for plant employees if stored incorrectly.
What is hydrofluorosilicic acid?
HYDROFLUOROSILICIC ACID (25% OR LESS) can react with strong acids (such as sulfuric acid) to release fumes of toxic hydrogen fluoride. Attacks glass and materials containing silica. Reacts exothermically with chemical bases (examples: amines, amides, inorganic hydroxides).
What is the formula for hydrofluosilicic acid 23 25%?
Hydrofluosilicic Acid 23-25% General Characteristics: Appearance: Clear, colorless to light yellow solution. Odor: Pungent. Chemical Formula: H2SiF6. CAS #: 16961-83-4. Molecular Weight: 144.09.
Why choose Hawkins for hydrofluosilicic acid?
We’re here to help you with all your chemical needs. As a trusted manufacturer and distributor to a large array of industries, Hawkins supplies Hydrofluosilicic Acid to various companies for a variety of applications and uses. Our customers depend on Hawkins for high quality products, a consistent and cost-effective supply of Hydrofluosilicic Acid.
What are the characteristics of fluorosilicic acid?
Acid Characteristics: Fluorosilicic acid is a transparent, straw colored, corrosive liquid having the chemical formulation of H2SiF6. It is manufactured in modern rubber lined equipment producingan acid of high commercial purity.