Ammonium hexafluorosilicate

CAS 16919-19-0(NH4)2SiF6Salts

Ammonium hexafluorosilicate (CAS: 16919-19-0) is an inorganic compound with the molecular formula (NH4)2SiF6 and a molecular weight of 178.15 g/mol. This white crystalline solid, also known as cryptohalite, is an essential chemical utilized across various scientific and industrial fields. Its applications span materials science, particularly in metal and ceramic treatments, and as a key reagent in chemical research.

IUPAC: Cryptohalite

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Ammonium hexafluorosilicate ((NH4)2SiF6) — chemical structure, CAS 16919-19-0; Chemistry, fine chemical supplied by Tech Serve Solutions

Ammonium SaltsEssential ChemicalsMaterials ScienceMetal and Ceramic ScienceNH3Research EssentialsSalts

01 /Applications

Materials Science

Ammonium hexafluorosilicate is employed in the development and treatment of materials, including metals and ceramics. It can be used in surface hardening processes and as a component in certain ceramic formulations.

Chemical Research Reagent

As a research essential, this compound serves as a valuable reagent in various laboratory syntheses and investigations. Its specific properties make it useful for exploring fluoride chemistry and related reactions.

Industrial Applications

The compound finds utility in specific industrial processes. Its behaviour as an ammonium salt and a source of fluoride ions allows for its application in niche manufacturing sectors.

02 /Properties

Molecular weight	178.15
Linear formula	(NH4)2SiF6
Assay	98%
Form	solid
Density	2.01 g/mL at 25 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Toxic (GHS06) — Toxic

Danger

Hazard statements

H301Toxic if swallowed
H311Toxic in contact with skin
H331Toxic if inhaled

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P280Wear protective gloves, clothing and eye/face protection
P301IF SWALLOWED
P311Call a POISON CENTER or doctor

Protective equipment	Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Transport (UN / ADR)	UN 2854 6.1 / PGIII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	T
Risk statements (R)	23/24/25
Safety statements (S)	26-45

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

16919-19-0

MDL number

MFCD00010887

PubChem substance

24852255

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Ammonium hexafluorosilicate used for?

Ammonium hexafluorosilicate is used in materials science, particularly for metal and ceramic treatments, and as a general chemical reagent in research laboratories.

What is the CAS number and formula for Ammonium hexafluorosilicate?

The CAS number is 16919-19-0, and the linear formula is (NH4)2SiF6.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Ammonium hexafluorosilicate with an assay of 98%. We do not represent this product as USP, BP, or EP grade.

How should Ammonium hexafluorosilicate be handled?

Ammonium hexafluorosilicate is a dangerous substance. It is toxic if swallowed, in contact with skin, and if inhaled (H301-H311-H331). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and P2 respirator cartridges, must be used. Handle with extreme caution in a well-ventilated area.

How is Ammonium hexafluorosilicate packed, shipped, and exported?

Tech Serve Solutions exports Ammonium hexafluorosilicate globally. Products are carefully packaged according to international shipping regulations, including UN 2854 6.1 / PGIII classification for transport.