Hexafluorosilicic Acid for Versatile Applications

Hydrofluorosilicic Acid |CAS No.: 16961-83-4

Synonyms	Hexafluorosilicic Acid, Fluorosilicic Acid, Silicofluoric Acid, Hydrosilicofluoric Acid, Hydrofluosilicic Acid, Hydrofluorosilicic Acid
Molecular Formula	H₂SiF₆
Mol. Wt	144.09
Cas No.	16961-83-4
UN No.	1778
EMS No.	F-A,S-B
EINECS No.	241-034-8
Physical state	Colorless, transparent and smoky liquid with penetrating odor, highly acidic.
Solubility	Miscible with water. Stable in aqueous solution.
Relative density	1.22 g/mL at 20 °C (lit.) 1.31 g/mL at 25 °C
Regular Package	25kg/drum, or according to customer's requirements
Storage	Tightly closed. Keep in a dry and well-ventilated place. Keep locked up.
Transportation	Hazardous Good, UN No.: 1778, Hazard Class: 8, Packing Group: II

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The Quality Specification of Hydrofluorosilicic Acid

Foshan Shuangfu Chemical's Hydrofluorosilicic Acid is mainly used in:

1. Water Fluoridation

Hydrofluorosilicic Acid (H2SiF6) is primarily used in water fluoridation to prevent dental cavities.

It is added to the water supply in small amounts to achieve a concentration between 0.7 to 1.2 parts per million.

This process is recognized by the World Health Organization (WHO), the American Dental Association (ADA),

and the Centers for Disease Control and Prevention (CDC) as a safe, effective, and cost-saving public health measure.

2. Etching

Hydrofluorosilicic Acid is used in the semiconductor industry for selective etching of silicon dioxide.

3. Reducing agent

Hydrofluorosilicic Acid is used in the manufacture of metallic aluminum to reduce impurities and improve quality.

4. Fireproofing

Hydrofluorosilicic Acid is used in the construction industry as a fire retardant for wood and textiles.

5. Electroplating

Hydrofluorosilicic Acid is used in the electroplating process to prepare metal surfaces for plating.

6. Cleaning

Hydrofluorosilicic Acid is used as a cleaning agent for stainless steel and glass surfaces.

7. Glass manufacturing

Hydrofluorosilicic Acid is used as a flux in glass manufacturing to lower the melting point of silica.

8. Animal feed supplement

Hydrofluorosilicic Acid is used as a source of fluorine for animal feed to prevent dental cavities and improve bone density.

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Hydrofluorosilicic Acid Cas No.: 16961-83-4