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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

Preparation Products

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Ammonium hexafluorosilicate Suppliers

Guangdong wengjiang Chemical Reagent Co., Ltd.
Tel
0751-2886750 13927877953
Fax
0751-2886750
Email
3005811397@qq.com
Country
China
ProdList
13320
Advantage
58
Shandong Duoju Chemical Co., Ltd
Tel
0531-88779566 13105315100
Email
3757200163@qq.com
Country
China
ProdList
452
Advantage
58
Wuhan Jiyesheng Chemical Co. , Ltd.
Tel
15927657172
Email
3698796631@qq.com
Country
China
ProdList
1758
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
future industrial shanghai co., ltd
Tel
400-0066400 13621662912
Fax
021-55660885
Email
sales@jonln.com
Country
China
ProdList
1995
Advantage
65
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44688
Advantage
61
Shanghai Mintchem Development Co., Ltd
Tel
021 6845 0923
Fax
0086 20 8234 8082
Email
fluorine@tatichem.com
Country
China
ProdList
38
Advantage
68
XiaoGan ShenYuan ChemPharm co,ltd
Tel
15527768850
Email
1791901229@qq.com
Country
China
ProdList
8836
Advantage
52
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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

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