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HFS (HYDROFLUOSILICIC ACID)

Hydrofluosilicic acid is a chemical often known by other names like fluorosilicic acid and fluosilicic acid.
Hydrofluosilicic acid’s often abbreviated to HSA or FSA.
Hydrofluosilicic acid is a colorless chemical that is created when you take phosphoric rock from the ground and convert it to soluble fertilizer.

CAS Number: 16961-83-4
European Community (EC) Number: 241-034-8

Trade Name: Hydrofluosilicic Acid
Chemical Name: Silicate(2-), hexafluoro-,dihydrogen
Chemical Family: Inorganic Fluorides
Synonyms: Fluorosilicic Acid, Fluosilicic Acid, Hexafluosilicic Acid, HFS, FSA
Primary Use: Industrial Chemical, Water treatment

Hydrofluorosilicic Acid (HFS) is a versatile, reliable, and potent compound.
Hydrofluosilicic Acid (HFS) is a cornerstone product in many industrial operations, offering a perfect balance between strength, safety, and durability.
Whatever your needs may be, Hydrofluosilicic Acid (HFS) can be your reliable partner, helping you achieve your operational objectives with efficiency and ease.

Applications:

-Cement
-Ceramics
-Chemical Intermediate
-Electroplating
-Laundry Sour
-Ore Extraction
-Sterilizing Bottling Equipment
-Water Fluoridation
-Wood Preservative

Hydrofluosilicic Acid (HFS) is a potent and highly reliable industrial-grade compound, widely used across a broad spectrum of applications and industries.

This top-quality Hydrofluosilicic Acid (HFS) is colorless, presenting itself as a clear, aqueous solution.
Hydrofluosilicic Acid (HFS) contains the right proportion of Hydrogen, Fluorine, Silicon, and Oxygen atoms, ensuring efficient performance and desired results in your applications.

One of the major uses of Hydrofluosilicic Acid (HFS) is in water treatment plants for fluoridation, where it is effectively used to adjust fluoride levels.
Hydrofluosilicic Acid (HFS) is known to help in the prevention of dental cavities, by providing the right amount of fluoride in the water supply.
Hydrofluosilicic Acid (HFS)s excellent solubility and high level of fluorine are what makes it the preferred choice for this application.

Moreover, this versatile compound also finds applications in the metal finishing industry.
In etching and cleaning processes, Hydrofluorosilicic Acid (HFS) proves its effectiveness by removing rust and scale from steel surfaces.
Hydrofluosilicic Acid (HFS) acts as a powerful descaling agent, removing unwanted mineral deposits and leaving a smooth, clean surface behind.

In the glass and ceramics industries, Hydrofluosilicic Acid (HFS) is known for its role in the acidification of clay, enhancing the overall quality of the final product.
Hydrofluosilicic Acid (HFS)s properties facilitate the toughening of ceramic materials, contributing to their durability and stability.

Hydrofluosilicic Acid (HFS) is also employed in the production of synthetic cryolite and aluminum fluoride, two compounds integral to the aluminum industry.
These substances play pivotal roles in reducing the melting point of aluminum, thus streamlining the smelting process.

Adhering to the highest standards of safety and quality, our Hydrofluorosilicic Acid (HFS) is rigorously tested and verified to ensure that it meets or exceeds all relevant industry specifications.
Hydrofluosilicic Acid (HFS) is manufactured under stringent conditions, ensuring its purity, efficacy, and consistent performance.

While Hydrofluosilicic Acid (HFS) is a robust and powerful compound, it requires proper handling due to its acidic nature.
It is crucial to observe all necessary safety measures during storage and usage.
Personal protective equipment, including acid-resistant gloves and eye protection, should be used when handling this product.

When stored appropriately, Hydrofluosilicic Acid (HFS) boasts a considerable shelf-life, making it a cost-effective solution for industries requiring a consistent supply over time.
Hydrofluosilicic Acid (HFS)s long-lasting nature also reduces waste and contributes to more efficient inventory management.

In conclusion, Hydrofluorosilicic Acid (HFS) is a versatile, reliable, and potent compound.
Hydrofluosilicic Acid (HFS) is a cornerstone product in many industrial operations, offering a perfect balance between strength, safety, and durability.
Whatever your needs may be, Hydrofluosilicic Acid (HFS) can be your reliable partner, helping you achieve your operational objectives with efficiency and ease.

Hydrofluosilicic Acid (HFS): a water-based solution used by most water systems in the United States.
Hydrofluosilicic Acid (HFS) is also referred to as hydrofluorosilicate, FSA, or HFS.

How Is Hydrofluorosilicic Acid Used
The most commonly discussed application for this chemical is water fluoridation at water treatment plants.
This process helps prevent periodontal problems and is added to drinking water.

Other uses of Hydrofluosilicic Acid (HFS) include ceramics (to increase hardness), disinfecting copper and brass vessels, hardening cement, etc., wood preservative and impregnating compounds, electroplating, manufacture of aluminum fluoride, synthetic cryolite and hydrogen fluoride, sterilizing bottling and brewing equipment (1-2% solution) and to etch glass.

USES:

Water Fluoridation: Hydrofluosilicic Acid (HFS) is commonly used in public water treatment plants as a fluoridation agent to help prevent dental cavities in the population.

Metal Surface Treatment: Due to its acidic nature, Hydrofluosilicic Acid (HFS) is employed in the treatment and etching of metal surfaces, especially aluminum.

Tanning Industry Use: Hydrofluosilicic Acid (HFS)'s utilized in the tanning of animal hides and skins, aiding in the preparation of leather.

Textile Industry Application: Hydrofluosilicic Acid (HFS) finds use in the textile industry as a pH adjuster and to help in the process of dye fixation.

PHYSICAL AND CHEMICAL PROPERTIES

Material Description Appearance/Description: Colorless to amber liquid with a pungent odor
Color: Colorless to amber
Physical State: Liquid
Odor: Pungent

General Properties
Boiling Point: 105°C (221°F) @ 23%-25%
Freezing/Melting Point: -18° to -20°C (-1° to -4°F) >105°C (>221°F) @ 23%-25%
Thermal Decomposition: 1.2
pH (1 % Solution): 1.2. Water = 1
Specific Gravity: 1.2. Water = 1
Bulk Density: 10.2 lb./gallon
Solubility in water:100% soluble in water
Viscosity: 6.5 cps
Molecular Weight of Pure Material: 144.11 g/mol

Trade Name: Hydrofluosilicic Acid
Chemical Name: Silicate(2-), hexafluoro-,dihydrogen
CAS Number: 16961-83-4
Chemical Family: Inorganic Fluorides
Synonyms: Fluorosilicic Acid, Fluosilicic Acid, Hexafluosilicic Acid, HFS, FSA
Primary Use: Industrial Chemical, Water treatment

Hydrofluorosilicic acid (HFS) is commonly used in the fluoridation of water for prevention of dental decay.
Some communities have naturally occurring levels of HFS in their water and have no need to fluoridate.
Others have a lack of HFS in their water and elect to add it to provide cavity protection for members of the community who otherwise might not receive it through dental treatments or otherwise.

Since the early 1950s, Hydrofluosilicic Acid (HFS) has been the main additive used for water fluoridation in the United States.
The favorable cost and high purity of FSA make it a popular additive.
Sodium fluorosilicate and sodium fluoride come from processing Hydrofluosilicic Acid (HFS), or from processing hydrogen fluoride.
Hydrofluosilicic Acid (HFS) can be partially neutralized by either table salt (sodium chloride) or caustic soda to get sodium fluorosilicate.
If enough caustic soda is added to completely neutralize the fluorosilicate, the result is sodium fluoride.
About 90% of the sodium fluoride used in the United States comes from Hydrofluosilicic Acid (HFS).

Reactivity Profile
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).
Reacts with active metals, including iron and aluminum to dissolve the metal and liberate hydrogen and/or toxic gases.
Can initiate polymerization in certain alkenes.
Reacts with cyanide salts and compounds to release gaseous hydrogen cyanide.
Flammable and/or toxic gases are also often generated by reactions with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and weak or strong reducing agents.
Additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates.
Can catalyze (increase the rate of) chemical reactions.
Decomposes when heated to the boiling point to produce very toxic and corrosive hydrogen fluoride gas.

Belongs to the Following Reactive Group(s)
-Acids, Strong Non-oxidizing
-Fluoride Salts, Soluble
-Water and Aqueous Solutions

Hydrofluorosilicic acid (hydrofluosilicic acid, FSA and HFS) is another commonly encountered commodity.
Hydrofluosilicic Acid (HFS) is much less reactive and toxic than hydrofluoric acid and is much less frightening to handle.
Hydrofluosilicic Acid (HFS) does not react with silicon-containing reinforcers.
Soft natural rubber linings were suitable for earlier versions at 23% concentration.

Storage:
HANDLING AND STORAGE
Use only in well-ventilated areas.
Use only equipment and materials which are compatible with the product.
Preferably transfer by pump or gravity. Keep away from incompatible products.
Do not use packing made of metal.
Store only in the original container.
Do not store together with strong bases or very alkaline substances.
Do not store together with substances which can be oxidized.
Do not store together with flammable substances/solutions.
Do not store near sources of heat or ignition, or reactive materials.
Must be stored in a room with spill collection facilities.
Keep containers tightly closed in a cool, well-ventilated place and away from heat.
Keep in a contained area.
Keep away from Incompatible products.

Safety Precautions: Hydrofluosilicic Acid is a potent and corrosive substance.
Proper protective equipment, including gloves and eye protection, should be worn when handling.
Hydrofluosilicic Acid (HFS) should also be stored in cool, well-ventilated areas away from incompatible materials.

SYNONYMS:

Hexafluorosilicic acid
Fluorosilicic acid
16961-83-4
Dihydrogen hexafluorosilicate
Silicate(2-), hexafluoro-, dihydrogen
Silicon hexafluoride dihydride
Fluorosilicic acid (H2SiF6)
hexafluorosilicon(2-); hydron
MFCD00036289
FLUOROSILIC ACID
Kieselfluorwasserstoffsaure
FLUOSILICIC ACID [MI]
53V4OQG6U1
DTXSID2029741
Dihydrogen hexafluorosilicate(2-)
OHORFAFFMDIQRR-UHFFFAOYSA-P
NSC-16894
hexakis(fluoranyl)silicon(2-); hydron
FT-0626488
HYDROGEN HEXAFLUOROSILICATE (H2SIF6)
HEXAFLUOROSILICATE(2-)HYDROGEN (1:2)
FLUOSILICIC ACID (HYDROFLUOSILICIC ACID)
A811126
Q411250
J-521443