POTASSIUM SILICOFLUORIDE

Potassium Silicofluoride is used in the manufacture of porcelain and also for the preservation of wood.
Potassium Silicofluoride is used in Glass & Ceramics, Industrial Chemicals, Metal Plating, Flourides.
Potassium Silicofluoride is used to make opalescent glass, in porcelain enamels, insecticides, and aluminum metallurgy

CAS Number: 16871-90-2
EC Number: 240-896-2 
Molecular Formula: F6Si.2K / K2SiF6 / F6K2Si
Molar mass: 220.28 g·mol−1 

SYNONYMS:
Potassium fluorosilicate, Potassium hexafluorosilicate(IV), Potassium hexafluorosilicate, 16871-90-2, Potassium fluosilicate, Potassium silicofluoride, Dipotassium hexafluorosilicate, 2610W49XYD, Dipotassium hexafluorosilicate(2-), EINECS 240-896-2, UN2655, UNII-2610W49XYD, Silicate(2-), hexafluoro-, potassium (1:2), DTXSID10884939, POTASSIUM HEXAFLUOROSILICATE [MI], SILICATE, HEXAFLUORO-, DIPOTASSIUM, EC 240-896-2, FLUOSILICATE DE POTASSIUM, Dipotassium hexafluorosilicate(2), FLUOROSILICATE DE POTASSIUM, SILICOFLUORURE DE POTASSIUM, DTXCID001024356, Silicate(2), hexafluoro, dipotassium, Silicate(2), hexafluoro, potassium (1:2), POTASSIUM FLUOROSILICATE, dipotassium;hexafluorosilicon(2-), Silicate(2-), hexafluoro-, dipotassium, MFCD00040666, F6K2Si, UUHPPUWEDCVPCO-UHFFFAOYSA-N, AKOS015914459, NS00085156, Potassium hexafluorosilicate, >=99.0% (T), Potassium fluorosilicate [UN2655], Q4134938, dipotassium hexafluorosilicate, dipotassium hexafluorosilicate(2-), dipotassium;hexafluorosilicon(2-), potassium fluorosilicate [UN2655] [Poison], potassium fluosilicate, potassium hexafluorosilicate, potassium silicofluoride, potassiumfluorosilicate, silicate(2-), hexafluoro-, dipotassium, silicate(2-), hexafluoro-, potassium (1:2), potassiumfluosilicate, Potassium Fluosilicate, POTASSIUM SILICOFLUORIDE, Potassium Silicofluoride, POTASSIUM FLUOROSILICATE, Potassium Fluorosilicate, POTASSIUM HEXAFLUOROSILICATE, potassium hexafluorosilicate, dipotassium hexafluorosilicate, potassium fluoro(oxo)silanolate, dipotassiumhexafluorosilicate(2-), hexafluoro-silicate(2-dipotassium, Silicate(2-),hexafluoro-,dipotassium, octadecapotassium fluoro(trioxido)silane, Dipotassium hexafluorosilicate, Potassium fluorosilicate, Potassium fluosilicate, Potassium silicofluoride, Dipotassium Hexafluorosilicate, potassium fluorosilicate, Silicofluoruro de potasio, Silicofluoreto de potassio, Potassium hexafluorosilicate, Dipotassium hexafluorosilicate, Silicate(2-), hexafluoro-, dipotassium, Dipotassium hexafluorosilicate(2-), Potassium fluosilicate, Potassium silicofluoride, Dipotassium hexafluorosilicate, Silicate(2-), hexafluoro-, dipotassium, Silicate(2-), hexafluoro-, potassium (1:2), Potassium fluorosilicate, [ChemIDplus] FLUOROSILICATE DE POTASSIUM, FLUOSILICATE DE POTASSIUM, SILICOFLUORURE DE POTASSIUM, [IUCLID] UN2655, POTASSIUM SILICOFLUORIDE, POTASSIUM HEXAFLUOROSILICATE, dipotassiumhexafluorosilicate(2-), Potassium fluosilica, potassiumfluosilicate, Kaliumhexafluorsilikat, potassium flurosilicate, POTASSIUM FLUOROSILICATE, POTASSIUM SILICAFLUORIDE, potassium-silicic-fluoride

Potassium Silicofluoride is a chemical compound with the chemical formula K2[SiF6].
When doped with potassium hexafluoromanganate(IV) (K2[MnF6], with Mn4+), Potassium Silicofluoride forms a narrow band red producing phosphor, (often abbreviated PSF or KSF), of economic interest due to its applicability in LED lighting and displays.

Potassium Silicofluoride occurs naturally as hiereatite, found in the Aeolian islands (Sicily, Italy).
Potassium Silicofluoride is a hexagonal form demartinite has also been found at the rim of volcanic fumaroles in the same islands.
The sea sponge Halichondria Moorei builds a skeleton of Potassium Silicofluoride.

According to analysis by Loehlin (1984), it has space group Fm3m, with a0 = 0.8134 nm, V = 0.538.2 nm3 at 295 K.
The Si-F bond length is 0.1683 nm
At high temperatures and pressures -beta and -gamma phases exist.

Potassium Silicofluoride has applications in porcelain manufacture, the preservation of timber, aluminium and magnesium smelting, and the manufacture of optical glass.
When doped with potassium hexafluoromanganate(IV) (K2[MnF6]), a narrow band red phosphor is produced, emitting at around 630 nm.

Potassium Silicofluoride has application improving the white light quality of white LEDs that use a blue emitting LED in combination with the yellow cerium doped yttrium aluminium garnet phosphor (YAG), Y3Al5O12:Ce3+.
Synthesis routes to the phosphor include co-crystallisation and co-precipitation.

For example, K2[MnF6] in (40%) hydrofluoric acid with potassium fluoride can be mixed with SiO2 dissolved in (40%) hydrofluoric acid to co-precipitate the phosphor.
The acronyms KSF or PSF are used for Potassium Silicofluoride phosphors.

Potassium Silicofluoride appears as a white, odorless crystalline powder.
Potassium Silicofluoride is denser than water.
Crystallise, Potassium Silicofluoride several times from conductivity water (100mL/g) between 100o and 0o.

Potassium Silicofluoride is a white, odorless, crystalline powder.
Potassium Silicofluoride is slightly soluble in water; soluble in hydrochloric acid.
Potassium Silicofluoride is a white, odorless crystalline powder.

Potassium Silicofluoride is slightly soluble in water.
Potassium Silicofluoride has weak oxidizing or reducing powers.
Redox reactions of Potassium Silicofluoride can however still occur.

Potassium Silicofluoride appears as a white, odorless crystalline powder.
Potassium Silicofluoride is a white Crystal or powder.
Potassium Silicofluoride is odorless and tasteless.

Potassium Silicofluoride is hygroscopic.
Potassium Silicofluoride is almost insoluble in cold water, insoluble in liquid ammonia and alcohol, soluble in hydrochloric acid.
The heat is decomposed into potassium fluoride and silicon tetrafluoride.

Potassium Silicofluoride is dissolved in hot water and decomposed into potassium fluoride, hydrogen fluoride and silicic acid.
The aqueous solution of Potassium Silicofluoride is acidic.
1% of the aqueous solution of Potassium Silicofluoride has a pH of 3.4.

The double decomposition of fluorosilicic acid solution and a certain concentration of potassium chloride or potassium sulfate solution at 70~80 ℃, after the reaction is completed, the product silica and Potassium Silicofluoride are separated, dried, after crushing, the final product of potassium fluosilicate was obtained.

Alternatively, Potassium Silicofluoride is prepared by neutralizing fluorosilicic acid with potassium carbonate or potassium hydroxide.
Potassium Silicofluoride is a white crystal or powder.
Potassium Silicofluoride is odorless and tasteless.

Relative density of Potassium Silicofluoride is 3.08.
Potassium Silicofluoride is slightly soluble in water.
Potassium Silicofluoride is soluble in hydrochloric acid, the solubility increased slightly with the increase of temperature.

Potassium Silicofluoride is insoluble in alcohol.
Potassium Silicofluoride, with the CAS number 16871-90-2, is an inorganic compound that consists of potassium, fluorine, silicon, and oxygen.
Potassium Silicofluoride typically appears as a white crystalline solid and is known for its solubility in water, which can vary depending on the specific conditions.

Potassium silicofluoride - is an inorganic chemical compound of potassium from the group of hexafluorosilicates and the potassium salt of hexafluorosilicic acid.
Potassium Silicofluoride is a dry, white, free-flowing, crystalline chemical.

Potassium Silicofluoride is a water insoluble Silicon source for use in oxygen-sensitive applications, such as metal production.
In extremely low concentrations (ppm), fluoride compounds are used in health applications.
Fluoride compounds also have significant uses in synthetic organic chemistry.

They are commonly also used to alloy metal and for optical deposition.
Certain fluoride compounds can be produced at nanoscale and in ultra high purity forms.
Potassium Silicofluoride is generally immediately available in most volumes.

Potassium Silicofluoride is a kind of white powder with a chemical formula of K2SiF6 and a molecular weight of 220.27.
Potassium Silicofluoride has hygroscopic property.
Potassium Silicofluoride is slightly soluble in water.

Potassium Silicofluoride is solubility increases slightly with increasing temperature.
In the process of smelting, stratified feed is adopted and the Potassium Silicofluoride catalyst is added, which can reduce the melting point of aluminum and magnesium and make the metal melt easily at a lower temperature, thus making the product crystal perfect.
Potassium Silicofluoride has the characteristics of high density, high temperature performance, good product quality and low energy consumption.

USES and APPLICATIONS of POTASSIUM SILICOFLUORIDE:
Metallurgical industry, Potassium Silicofluoride is used as magnesium, aluminum smelting additives.
Glass industry, Potassium Silicofluoride is used for the manufacture of potassium glass, optical glass, opaque glass.
Pesticide industry, Potassium Silicofluoride is used for the manufacture of pesticides.

Potassium Silicofluoride is used in the chemical industry to make intermediates.
Potassium Silicofluoride is used as analytical reagents in analytical chemistry.
Potassium Silicofluoride can also be used in the synthesis of mica and other aspects of ceramic.

Potassium Silicofluoride is used in the production of porceleins.
Potassium Silicofluoride is also used for the preservation of timber.
Potassium Silicofluoride is involved in the manufacturing of ceramics, aluminum and magnesium smelting.

In addition, Potassium Silicofluoride is used as an intermediate in the manufacturing of optical glass.
Potassium Silicofluoride is used in the manufacture of opalescent glass, in porcelain enamels, and in insecticides.
Potassium Silicofluoride is also used in aluminum metallurgy.

Potassium Silicofluoride is used to make other chemicals.
Potassium Silicofluoride is used to make other chemicals.
As a type of fluorosilicate, Potassium Silicofluoride can be used as fluoridizing agents for water supplies, in the production of synthetic cryolite, and in metal plating.

Potassium Silicofluoride can be used as oral care ingredient, as a fluxing ingredient in porcelain enamels, and as wood preservative elements.
Potassium Silicofluoride can also be used for the manufacture of ceramic materials and optical glasses.
Potassium Silicofluoride can be used for wood preservation, ceramic manufacturing, aluminum and magnesium smelting, optical glass manufacturing, synthesis of mica and potassium gallate production.

Potassium Silicofluoride is used as wood preservative, aluminum-magnesium alloy flux, agricultural insecticide, also used in optical glass manufacturing, synthetic mica and enamel manufacturing, etc.
Potassium Silicofluoride is used in wood preservation, ceramic manufacturing, aluminum and magnesium smelting, optical glass manufacturing, synthetic mica and potassium hydroxide manufacturing and so on.

The wood industry, Potassium Silicofluoride uses preservatives.
The metallurgical industry, Potassium Silicofluoride is used magnesium, aluminum smelting additives.
The glass industry, Potassium Silicofluoride is used in the manufacture of potassium glass, optical glass, opaque glass.

Potassium Silicofluoride is used in the pesticide industry for the manufacture of pesticides.
Potassium Silicofluoride is used in the organic industry for the manufacture of intermediates.
Potassium Silicofluoride is used in analytical chemistry as analytical reagents.

Potassium Silicofluoride is used in chemical production for the production of anti-corrosion materials.
Potassium Silicofluoride is also used in ceramics, synthetic mica and other aspects.
Potassium Silicofluoride is used as analytical reagents and pesticides.

Potassium Silicofluoride is also used in the smelting of aluminum, the manufacture of opaque glass and the preparation of enamel.
Potassium Silicofluoride is often utilized in various industrial applications, including glass manufacturing, ceramics, and as a flux in metallurgy.

Potassium Silicofluoride's chemical structure features a silicate framework, where fluorine atoms are coordinated with silicon, contributing to its unique properties.
Potassium Silicofluoride can also serve as a source of fluoride ions, which are important in various chemical processes.

Overall, Potassium Silicofluoride is a versatile compound with significant applications in both industrial and research settings.
Potassium Silicofluoride is widely used for wood preservation, ceramics manufacture, aluminum and magnesium smelting, agricultural pesticides, optical glass manufacturing, synthetic.

Potassium Silicofluoride is widely used for wood preservation, ceramics manufacture, aluminum and magnesium smelting, agricultural pesticides, optical glass manufacturing, synthetic mica and so on.
Different fluoride salts play different roles in aluminum and magnesium smelting, and Potassium Silicofluoride is an important auxiliary for aluminum and magnesium smelting in metallurgical industry.

Potassium Silicofluoride is an additive used in hard chrome plating as a source of potassium and fluoride ions in mixed catalyst baths
Potassium fluorosilicate, aka Potassium Silicofluoride has applications in hard chrome plating, procelain manufacture, preservation of timber, aluminium and magnesium production in smelting, and intermediate for optical deposition.

Potassium Silicofluoride is commonly used to alloy metal.
Potassium Silicofluoride is used to manufacture opalescent glass.
Potassium Silicofluoride is used in the manufacture of porcelain and also for the preservation of wood.

Potassium Silicofluoride is involved in the production of ceramics, aluminum and magnesium melts and also serves as an intermediate in the production of optical glass.
Potassium Silicofluoride is used for wood preservation, ceramic manufacturing, aluminum and magnesium smelting, optical glass manufacturing, synthetic mica and potassium gallate manufacturing

Potassium Silicofluoride is commonly used as a flux in the production of frites and enamels, opalescent glass and enamelled porcelain, fungicide, opacifying for the manufacture of vitreous enamels and opalescent glass, as a wood preservative, in construction, and for surface treatments.

Potassium Silicofluoride is used in Glass & Ceramics, Industrial Chemicals, Metal Plating, Flourides.
Potassium Silicofluoride is used to make opalescent glass, in porcelain enamels, insecticides, and aluminum metallurgy

PHYSICAL and CHEMICAL PROPERTIES of POTASSIUM SILICOFLUORIDE:
*Character 
Potassium Silicofluoride is a white crystal or powder.
Potassium Silicofluoride is odorless and tasteless.
relative density of Potassium Silicofluoride is 3.08

*solubility 
Potassium Silicofluoride is slightly soluble in water.
Potassium Silicofluoride is soluble in hydrochloric acid, the solubility increased slightly with the increase of temperature.
Potassium Silicofluoride is insoluble in alcohol.

PHYSICAL and CHEMICAL PROPERTIES of POTASSIUM SILICOFLUORIDE:
Chemical formula: K2[SiF6]
Molar mass: 220.28 g·mol−1 
Density: 2.27 g·cm−3,[1] 2.719 g·cm−3
Solubility in water: Slightly soluble in water
Structure
Crystal structure: cubic
Space group: Fm3m
Lattice constant: a = 0.8134 nm
Lattice volume (V): 0.538.2 nm3
Formula units (Z): 4

Molecular Weight: 220.272 g/mol
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 7
Rotatable Bond Count: 0
Exact Mass: 219.8947585 Da
Monoisotopic Mass: 219.8947585 Da
Topological Polar Surface Area: 0 Ų
Heavy Atom Count: 9

Formal Charge: 0
Complexity: 62.7
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 3
Compound Is Canonicalized: Yes

CBNumber: CB5371161
Molecular Formula: F6K2Si
Molecular Weight: 220.27
MDL Number: MFCD00040666
MOL File: 16871-90-2.mol
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
Odor: Odorless
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)
EWG's Food Scores: 1-3
FDA UNII: 2610W49XYD
EPA Substance Registry System: Silicate(2-), hexafluoro-, dipotassium (16871-90-2)
UNSPSC Code: 12000000
NACRES: NA.21
Linear Formula: K2SiF6
CAS Number: 16871-90-2
Molecular Weight: 220.27
EC Number: 240-896-2

MDL number: MFCD00040666
UNSPSC Code: 12352200
PubChem Substance ID: 329758873
NACRES: NA.21
Assay: ≥99.0% (T)
Form: solid
Physical state: crystalline
Color: white
Odor: No data available

Melting point/freezing point: No data available
Initial boiling point and boiling range: No data available
Flammability (solid, gas): The product is not flammable.
Upper/lower flammability or explosive limits: No data available
Flash point: Not applicable
Autoignition temperature: No data available
Decomposition temperature: No data available
pH: No data available

Viscosity:
Viscosity, kinematic: No data available
Viscosity, dynamic: No data available
Water solubility: No data available
Partition coefficient: n-octanol/water: No data available
Vapor pressure: No data available
Density: 2.665 g/mL at 25 °C - lit.
Relative density: No data available
Relative vapor density: No data available
Particle characteristics: No data available

Explosive properties: No data available
Oxidizing properties: No data available
Other safety information: No data available
Appearance: white crystalline powder (est)
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Specific Gravity: 2.66500 @ 25.00 °C
Flash Point: 32.00 °F. TCC (0.00 °C) (est)
Compound Formula: F6K2Si
Molecular Weight: 220.27
Appearance: White Powder

Melting Point: N/A
Boiling Point: N/A
Density: N/A
Solubility in H2O: N/A
Exact Mass: 219.89476
Monoisotopic Mass: 219.89476
Linear Formula: K2SiF6
Pubchem CID: 61851
MDL Number: MFCD00040666
EC No.: 240-896-2

IUPAC Name: dipotassium hexafluorosilicon(2-)
Beilstein/Reaxys No.: N/A
SMILES: [K+].[K+].FSi-2
(F)(F)(F)F
InchI Identifier: InChI=1S/F6Si.2K/c1-7(2,3,4,5)6;;/q-2;2*+1
InchI Key: UUHPPUWEDCVPCO-UHFFFAOYSA-N
CAS Number: 16871-90-2
Chemical Formula: K2SiF6
Molecular Weight: 220.27
Form: White powder

Purity: 97%
CAS: 16871-90-2
EINECS: 240-896-2
InChI: InChI=1/FO2Si.K/c1-4(2)3;/q-1;+1
Molecular Formula: F6K2Si
Molar Mass: 220.27
Density: 2.665 g/mL at 25°C (lit.)
Melting Point: °Cd ec.)
Boling Point: dec
Water Solubility: Slightly soluble in water.

Vapor Presure: 0.01 Pa
Appearance: Powder
Specific Gravity: 2.665
Color: White
Exposure Limit: ACGIH: TWA 2.5 mg/m3, NIOSH: IDLH 250 mg/m3
Solubility Product Constant (Ksp): pKsp: 6.06
Merck: 14,7638
Sensitive: Moisture Sensitive
Refractive Index: 1.3991

FIRST AID MEASURES of POTASSIUM SILICOFLUORIDE:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Call in ophthalmologist. 
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of POTASSIUM SILICOFLUORIDE:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of POTASSIUM SILICOFLUORIDE:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of POTASSIUM SILICOFLUORIDE:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A 
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of POTASSIUM SILICOFLUORIDE:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of POTASSIUM SILICOFLUORIDE:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available