What is Sodium Hexafluorosilicate used for?

Sodium Hexafluorosilicate, also called sodium fluorosilicate or Na2SiF6, is mainly used in drinking-water fluoridation, as an opal glass/ceramics raw material, and in metal or ore processing. It also appears in selected enamel, cement/concrete, fluoride-preparation and industrial biocide applications. The intended use matters because purity, trace-metal and particle-size requirements differ by application.

Does CAS 16893-85-9 define one grade?

No. CAS 16893-85-9 identifies Sodium Hexafluorosilicate as Na2SiF6, but water-treatment, glass, ceramics and metal-treatment grades can still have different assay, fluoride, heavy-metal, moisture and particle-size profiles. State the intended use and required specification when comparing offers.

Which specifications and physical properties matter?

Confirm Na2SiF6 or fluoride content, heavy metals such as lead and arsenic, moisture, particle-size distribution and insoluble matter. It is normally a white crystalline powder with density around 2.68-2.7 g/cm3, only slight water solubility, and decomposition at high temperature.

How should Sodium Hexafluorosilicate be stored and transported?

It is commonly transported as UN 2674, Hazard Class 6.1, Packing Group III. Store in a cool, dry, ventilated area away from acids, food, feed and incompatible materials, keep containers tightly closed, and avoid dust generation.

Sodium Hexafluorosilicate CAS 16893-85-9

Sodium Hexafluorosilicate, CAS 16893-85-9, is an inorganic fluorosilicate salt for industrial processing. For an RFQ, state the intended process, required powder specification, quantity, packaging, destination, and document needs.

CAS: 16893-85-9
Synonyms: Sodium hexafluorosilicate; Sodium fluorosilicate; Sodium silicofluoride; Na2SiF6
Einecs: 240-934-8
Molecular Formula: Na₂SiF₆
Grade: Confirm the current product-specific specification.
Package: Confirm packaging for the offered material and destination requirements.

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Product Description

Sodium hexafluorosilicate, also called sodium fluorosilicate, is an inorganic fluorosilicate salt identified by CAS 16893-85-9.

Molecular formula: Na₂SiF₆.

Molar mass: 188.06 g/mol.

CAS Number: 16893-85-9.

EINECS: 240-934-8.

Density: confirm the current product-specific value.

Physical form, appearance, and key quality limits: confirm the current product-specific specification.

Typical use: sodium hexafluorosilicate is an inorganic fluorosilicate used in industrial processing. Confirm the process-specific powder requirements before quotation.

FAQ - Technical & Supply Chain

Q:
What is Sodium Hexafluorosilicate used for?

A: Sodium Hexafluorosilicate, also called sodium fluorosilicate or Na2SiF6, is mainly used in drinking-water fluoridation, as an opal glass/ceramics raw material, and in metal or ore processing. It also appears in selected enamel, cement/concrete, fluoride-preparation and industrial biocide applications. The intended use matters because purity, trace-metal and particle-size requirements differ by application.
Q:
Does CAS 16893-85-9 define one grade?

A: No. CAS 16893-85-9 identifies Sodium Hexafluorosilicate as Na2SiF6, but water-treatment, glass, ceramics and metal-treatment grades can still have different assay, fluoride, heavy-metal, moisture and particle-size profiles. State the intended use and required specification when comparing offers.
Q:
Which specifications and physical properties matter?

A: Confirm Na2SiF6 or fluoride content, heavy metals such as lead and arsenic, moisture, particle-size distribution and insoluble matter. It is normally a white crystalline powder with density around 2.68-2.7 g/cm3, only slight water solubility, and decomposition at high temperature.
Q:
How should Sodium Hexafluorosilicate be stored and transported?

A: It is commonly transported as UN 2674, Hazard Class 6.1, Packing Group III. Store in a cool, dry, ventilated area away from acids, food, feed and incompatible materials, keep containers tightly closed, and avoid dust generation.

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