Description References
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Potassium fluorosilicate

Description References
Product Name
Potassium fluorosilicate
CAS No.
16871-90-2
Chemical Name
Potassium fluorosilicate
Synonyms
POTASSIUM SILICOFLUORIDE;POTASSIUM HEXAFLUOROSILICATE;dipotassiumhexafluorosilicate(2-);Potassium fluosilica;potassiumfluosilicate;Kaliumhexafluorsilikat;potassium flurosilicate;POTASSIUM FLUOROSILICATE;POTASSIUM SILICAFLUORIDE;potassium-silicic-fluoride
CBNumber
CB5371161
Molecular Formula
F6K2Si
Formula Weight
220.27
MOL File
16871-90-2.mol
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Potassium fluorosilicate Property

Melting point:
°Cd ec.)
Boiling point:
dec
Density 
2.665 g/mL at 25 °C(lit.)
vapor pressure 
0.01Pa
refractive index 
1.3991
solubility 
insoluble in ethanol
form 
Powder
Specific Gravity
2.665
color 
White
Water Solubility 
Slightly soluble in water.
Sensitive 
Moisture Sensitive
Hydrolytic Sensitivity
0: forms stable aqueous solutions
Merck 
14,7638
Solubility Product Constant (Ksp)
pKsp: 6.06
Exposure limits
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3
LogP
0.001
CAS DataBase Reference
16871-90-2(CAS DataBase Reference)
EPA Substance Registry System
Silicate(2-), hexafluoro-, dipotassium (16871-90-2)
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Safety

Hazard Codes 
T,Xi
Risk Statements 
23/24/25
Safety Statements 
26-45
RIDADR 
UN 2655 6.1/PG 3
WGK Germany 
2
RTECS 
VV8400000
21
Hazard Note 
Irritant
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
2826908090
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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
60322
Product name
Potassium hexafluorosilicate
Purity
≥99.0% (T)
Packaging
1kg
Price
$96.6
Updated
2024/03/01
Alfa Aesar
Product number
044495
Product name
Potassium hexafluorosilicate, 99.999% (metals basis)
Packaging
10g
Price
$63.65
Updated
2024/03/01
Alfa Aesar
Product number
044495
Product name
Potassium hexafluorosilicate, 99.999% (metals basis)
Packaging
50g
Price
$195.65
Updated
2024/03/01
Strem Chemicals
Product number
93-1959
Product name
Potassium hexafluorosilicate, 99%
Packaging
500g
Price
$46
Updated
2024/03/01
Strem Chemicals
Product number
93-1959
Product name
Potassium hexafluorosilicate, 99%
Packaging
2kg
Price
$164
Updated
2024/03/01
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Potassium fluorosilicate Chemical Properties,Usage,Production

Description

As a type of fluorosilicate, potassium fluorosilicate can be used as fluoridizing agents for water supplies, in the production of synthetic cryolite, and in metal plating. Potassium fluorosilicate can be used as oral care ingredient, as a fluxing ingredient in porcelain enamels, and as wood preservative elements. Potassium fluorosilicate can also be used for the manufacture of ceramic materials and optical glasses.

References

[1] W. John Williams, Handbook of Anion Determination, 1979
[2] Ruth Winter, A Consumer's Dictionary of Cosmetic Ingredients, 7th Edition, 2009
[3] B. A. Richardson, Wood Preservation, 2nd Edition, 1993
[4] Werner Vogel, Glass Chemistry, 2nd Edition, 1994

Chemical Properties

White, odorless, crystalline powder. D 3.0. Slightly soluble in water; soluble in hydrochlo- ric acid.

Uses

Potassium hexafluorosilicate is used in the production of porceleins. It is also used for the preservation of timber. It is involved in the manufacturing of ceramics, aluminum and magnesium smelting. In addition, it is used as an intermediate in the manufacturing of optical glass.

Uses

In the manufacture of opalescent glass, in porcelain enamels, in insecticides. Also used in aluminum metallurgy.

General Description

A white, odorless crystalline powder. Denser than water. Contact may cause irritation to skin, eyes, and mucous membranes. May be toxic by ingestion. Used to make other chemicals.

Air & Water Reactions

Slightly soluble in water.

Reactivity Profile

Potassium fluorosilicate has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.

Hazard

Toxic by ingestion and inhalation, strong irritant to tissue.

Health Hazard

Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

Industrial uses

Potassium fluorosilicate is a white to yellowish powder, poorly soluble in water (0.68% at 20 °C). Because of its poor solubility, it is not commonly used as a modifying reagent.

Safety Profile

A poison by ingestion and subcutaneous routes. Ingestion can cause vomiting and dtarrhea. A strong irritant. Incompatible with hydrofluoric acid. When heated to decomposition it emits toxic fumes of SiF4, K3SiF7, and KF.

Purification Methods

Crystallise it several times from conductivity water (100mL/g) between 100o and 0o.

Potassium fluorosilicate Preparation Products And Raw materials

Raw materials

Preparation Products

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Potassium fluorosilicate Suppliers

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006608290; 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40241
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30132
Advantage
84
BeiJing Hwrk Chemicals Limted
Tel
0757-86329057 18501085097
Fax
010-89508210
Email
sales3.gd@hwrkchemical.com
Country
China
ProdList
7508
Advantage
55
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44751
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
JinYan Chemicals(ShangHai) Co.,Ltd.
Tel
13817811078
Fax
86-021-50426522,50426273
Email
sales@jingyan-chemical.com
Country
China
ProdList
9984
Advantage
60
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202 13764082696;
Email
info@hanhongsci.com
Country
China
ProdList
42982
Advantage
64
Shandong Xiya Chemical Co., Ltd
Tel
4009903999 13355009207
Fax
0539-6365991
Email
3007715519@qq.com
Country
China
ProdList
18736
Advantage
57
BEST-REAGENT
Tel
400-1166-196 18981987031
Fax
028-84555506 800101999
Email
cdhxsj@163.com
Country
China
ProdList
11726
Advantage
57
Tianjin heowns Biochemical Technology Co., Ltd.
Tel
400 638 7771
Email
sales@heowns.com
Country
China
ProdList
14443
Advantage
57
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View Lastest Price from Potassium fluorosilicate manufacturers

Hebei Duling International Trade Co. LTD
Product
Potassium fluorosilicate 16871-90-2
Price
US $30.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100 tons
Release date
2023-04-11
Hebei Yanxi Chemical Co., Ltd.
Product
Potassium fluorosilicate 16871-90-2
Price
US $0.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
20 tons
Release date
2023-11-15
Hebei Guanlang Biotechnology Co., Ltd.
Product
Potassium fluorosilicate 16871-90-2
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2022-09-26

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