16919-19-0

Basic information

• Product Name: Ammonium hexafluorosilicate
• Synonyms: Cryptophthalite;Ammonium hexafluorosilicate, min. 98%;Ammonium hexafluorosilicate,98%;Ammonium hexafluorosilicate, Puratronic (metals basis);Ammonium hexafluorosilicate ,99.99%;Ammomium fluosilicat;AMMoniuM hexafluorosilicate, (trace Metal basis);AMMoniuM hexafluorosilicate, 99.999%, (trace Metal basis)
• CAS NO: 16919-19-0
• Molecular Formula: F6H8N2Si
• Molecular Weight: 178.15
• EINECS: 240-968-3
• Product Categories: halometallate salts;Ammonium Salts;Materials Science;Metal and Ceramic Science;NH3;Ultra-High Purity Materials;Preservative;Industrial/Fine Chemicals;Inorganic Chemicals;Inorganics;Ammonium Salts;Metal and Ceramic Science;Salts
• Mol File: 16919-19-0.mol
• Article Data: 0

Chemical Properties

• Melting Point: °Cd ec.)
• Appearance: White/Crystalline Powder and Chunks
• Density: 2.01 g/mL at 25 °C(lit.)
• Vapor Pressure: 9.99Pa at 20℃
• Solubility: water solubility 18 g/100 g water.
• Water Solubility: Slightly soluble in water. Insoluble in alcohol and acetone.
• Merck: 14,527
• CAS DataBase Reference: Ammonium hexafluorosilicate(CAS DataBase Reference)
• NIST Chemistry Reference: Ammonium hexafluorosilicate(16919-19-0)
• EPA Substance Registry System: Ammonium hexafluorosilicate(16919-19-0)

Safety Data

• Hazard Codes: T
• Statements: 23/24/25
• Safety Statements: 26-45
• RIDADR: UN 2854 6.1/PG 3
• WGK Germany: 2
• RTECS: VV7800000
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 16919-19-0(Hazardous Substances Data)

Usage

Chemical Properties

white slightly adhering crystalline powder

Physical properties

d 2.01 g cm?3; decomposes prior to melting; odorless.

Uses

Different sources of media describe the Uses of 16919-19-0 differently. You can refer to the following data:
1. Ammonium hexafluorosilicate is used as a disinfectant and analytical reagent. It finds application in etching glass, metal casting, and electroplating. It is also employed as a wood preservative agent and mothproofing agent in textiles. It plays a useful application in soldering flux. It is also used to arrest caries treatment without discoloration on demineralized primary tooth enamel.
2. In pesticides; in soldering flux; etching glass.

General Description

A white crystalline solid. Noncombustible. Corrodes aluminum. Used as a disinfectant, in etching glass, metal casting, and electroplating.

Air & Water Reactions

Water soluble.

Reactivity Profile

Salts, basic, such as Ammonium hexafluorosilicate, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

Hazard

Very toxic; fatal.

Health Hazard

Inhalation of dust can cause pulmonary irritation and can be fatal in some cases. Ingestion may be fatal. Contact with dust causes irritation of eyes and irritation or ulceration of skin.

Fire Hazard

Special Hazards of Combustion Products: Toxic and irritating hydrogen fluoride, silicon tetrafluoride, and oxides of nitrogen may form in fires.

Flammability and Explosibility

Notclassified

Purification Methods

Crystallise the salt from water (2mL/g). After 3 recrystallisations, the Technical grade salt has Li, Na, K and Fe at 0.3, 0.2, 0.1 and 1.0 ppm respectively.

InChI:InChI=1/FO2Si.H3N/c1-4(2)3;/h;1H3/q-1;/p+1

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Ferrierite zeolite has been treated with ammonium hexafluorosilicate (AHFS). The prepared catalysts were characterized by XRD, atomic absorption spectroscopy, ammonia TPD, FT-IR, SEM, BET/pore size distribution and pyridine chemisorption. Their catalytic activity has been evaluated in the skelet...detailed

Influence of the treatment of mordenite by Ammonium hexafluorosilicate (cas 16919-19-0) on physicochemical and catalytic properties08/08/2019

Different samples were prepared by treating a NH4MOR sample (Si/Al = 5) with ammonium hexafluorosilicate. The dealumination of the outer surface of mordenite crystallites was more pronounced than that of the bulk. A decrease in the adsorption rate and capacity for organic molecules and in activi...detailed

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The preparation and characterization of the ammonium hexafluorosilicate salts, 2[R]+ [SiF6]2− (where R=piperidinium (2), methylammonium (3), quinolinium (4), acridinium (5), 2,2,6,6-tetramethylpiperidinium (6), and propylammonium (7)) is described.The salts were prepared from the reaction of the...detailed

Object and Mathematical Simulation of Ammonium hexafluorosilicate (cas 16919-19-0) Sublimation08/04/2019

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