Ammonium hexafluorosilicate

Product Name: Ammonium hexafluorosilicate
CAS No.: 16919-19-0
Chemical Name: Ammonium hexafluorosilicate
Synonyms: lpe6;ai3-25550-x;caswellno043;Ammonium fluor;Cryptophthalite;Ammomium fluosilicat;AMMONIUM FLUOSILICATE;Ammomium fluosilicate;Ammonium silicfluoride;diammoniumfluosilicate
CBNumber: CB0691538
Molecular Formula: F6H8N2Si
Formula Weight: 178.15
MOL File: 16919-19-0.mol

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Ammonium hexafluorosilicate Property

Melting point:: °Cd ec.)
Density: 2.01 g/mL at 25 °C(lit.)
vapor pressure: 9.99Pa at 20℃
solubility: water solubility 18 g/100 g water.
form: Crystalline Powder and Chunks
Specific Gravity: 2.011
color: White
Water Solubility: Slightly soluble in water. Insoluble in alcohol and acetone.
Hydrolytic Sensitivity: 0: forms stable aqueous solutions
Merck: 14,527
Exposure limits: ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
InChI: InChI=1S/F6Si.2H3N/c1-7(2,3,4,5)6;;/h;2*1H3/q-2;;/p+2
InChIKey: ITHIMUMYFVCXSL-UHFFFAOYSA-P
SMILES: [Si-2](F)(F)(F)(F)(F)F.[NH4+].[NH4+]
LogP: -6.01 at 20℃
CAS DataBase Reference: 16919-19-0(CAS DataBase Reference)
EPA Substance Registry System: Ammonium silicofluoride (16919-19-0)

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Safety

Hazard Codes: T
Risk Statements: 23/24/25
Safety Statements: 26-45
RIDADR: UN 2854 6.1/PG 3
WGK Germany: 2
RTECS: VV7800000
Hazard Note: Toxic
TSCA: Yes
HazardClass: 6.1
PackingGroup: III
HS Code: 2826908090
Hazardous Substances Data: 16919-19-0(Hazardous Substances Data)
Toxicity: LD orally in guinea pigs: 150 mg/kg (Simonin, Pierron)

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word: Danger
Precautionary statements: P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 204331
Product name: Ammonium hexafluorosilicate
Purity: 99.999% trace metals basis
Packaging: 10g
Price: $78.4
Updated: 2023/01/07

Sigma-Aldrich

Product number: 204331
Product name: Ammonium hexafluorosilicate
Purity: 99.999% trace metals basis
Packaging: 50g
Price: $239
Updated: 2023/01/07

Sigma-Aldrich

Product number: 204331
Product name: Ammonium hexafluorosilicate
Purity: 99.999% trace metals basis
Packaging: 250g
Price: $742
Updated: 2023/01/07

Alfa Aesar

Product number: 043184
Product name: Ammonium hexafluorosilicate, Puratronic?, 99.999% (metals basis)
Packaging: 10g
Price: $54.65
Updated: 2024/03/01

Alfa Aesar

Product number: 043184
Product name: Ammonium hexafluorosilicate, Puratronic?, 99.999% (metals basis)
Packaging: 50g
Price: $151.65
Updated: 2024/03/01

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Ammonium hexafluorosilicate Chemical Properties,Usage,Production

Chemical Properties

white slightly adhering crystalline powder

Chemical Properties

Ammonium hexafluorosilicate is a white crystalline powder. Odorless.

Physical properties

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

Uses

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.

Uses

In pesticides; in soldering flux; etching glass.

Preparation

By reacting crude quartz with ammonium fluoride or ammonium hydrodifluoride or a mixture thereof in an aqueous medium when heated from 50 ° to 110 ° C. to form ammonium hexafluorosilicate, separating it from unreacted quartz and insoluble impurities by known methods (filtration or centrifugation) and subsequent concentration and cooling of the mother liquor for crystallization of Ammonium hexafluorosilicate.

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

Not classified

Potential Exposure

This material is used as a pesticide and miticide, wood preservative, soldering flux; light metal casting; and in the etching of glass.

Shipping

UN2856 Fluorosilicates, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

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.

Incompatibilities

Aqueous solution is highly corrosive. Contact with acids reacts to form hydrogen fluoride, which is a highly corrosive and forms a toxic gas. Corrosive to aluminum. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Ammonium fluorosilicate reacts with water to form hydrofluoric acid, a source of fluoride ions. Unlike other halide ions, the fluoride ion is highly reactive, acting as a weak base and participating in some unique reactions. In particular, fluorides react strongly with compounds containing calcium, magnesium, or silicon ions, which means that solutions containing soluble fluorides are corrosive to both living tissue and glass. Hydrofluoric acid can cause severe chemical burns and is one of the few materials that can etch glass. It is also a toxic gas in its anhydrous form.

Waste Disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Incineration.

Ammonium hexafluorosilicate Preparation Products And Raw materials

Raw materials

Hexafluorosilicic acid Fluorite powder Silica sand Ammonium bicarbonate

Preparation Products

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Ammonium hexafluorosilicate Suppliers

China 179 Europe 2 France 3 Germany 4 India 18 Japan 3 Singapore 1 South Korea 1 Switzerland 1 United Kingdom 9 United States 29 Global 250

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View Lastest Price from Ammonium hexafluorosilicate manufacturers

Hebei Weibang Biotechnology Co., Ltd

Product: Ammonium hexafluorosilicate 16919-19-0
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-10-30

Hebei Yanxi Chemical Co., Ltd.

Product: Ammonium hexafluorosilicate 16919-19-0
Price: US $30.00-10.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 10 tons
Release date: 2023-10-12

Shaanxi Dideu Medichem Co. Ltd

Product: Ammonium hexafluorosilicate 16919-19-0
Price: US $0.10/KG
Min. Order: 1KG
Purity: 99.0%
Supply Ability: 1000Tons
Release date: 2024-08-20

16919-19-0, Ammonium hexafluorosilicateRelated Search:

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Ammonium

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Inorganics