• Lower the smelting point of media
• Used in the paper industry, for fire brick production
• Used as the inhibitor in alcoholic fermentation
• To adjust the molecular ratio in aluminum electrobath

• in aluminum metallurgy as flexing agent
• as protective and refining salt
• in production of abrasives
• metal surface treatment as glass opacifier

• To acidize oil wells in silicate rocks to regenerate oil flow
• For removal of siliceous scales from boiler tubers, heat exchangers, condensers and economizers
• While pickling of steel
• In aluminum anodizing formulation
• As a bactericide in sugar industry
• For frosting, polishing and etching of glass
• Preservation of wood
• Used as disinfectant in breweries & distilleries

• Glass etching
• Harsh cleaning solutions
• Oil drilling
• Disinfectant
• Metal treatment & processing of alloys
• As sterilant for dairy equipment
• Wood preservative
• Moth proofing agent
• Chemical intermediate

• Fusing agent for magnesium metal
• Additive for electrolytic aluminum
• Coating on optical lens
• Finishing agent for titanium pigment
• Fluorescent material for CRT
• Used in ceramic and glass industries

• In refrigerants manufacturing
• In the manufacturing of aluminium trifluoride, organic and inorganic fluorine compounds
• As catalyst in petro chemical industry for alkylation

• In pharmaceutical industry for manufacturing bulk drugs
• In manufacturing of inorganic fluoborates
• In electroplating

• As a makeup ingredient while electrolytic processing of aluminum metal
• In low volumes used as flux in welding, brazing, soldering and also in glass, ceramics, enamels

• Used in manufacturing of aluminum alloys containing titanium
• Used in the manufacturing of titanium metal

• While manufacturing metal treatment compounds
• While manufacturing Opalescent glass
• While manufacturing Foam
• In the process of water fluoridation

• Used as flux in the smelting of secondary aluminum
• To reduce or remove the magnesium content of the melt
• Use in metal industry as a fluxing agent within additives to help in dispersion
• It is also use in insecticide

Properties-White granular deliquescent powder with a sharp saline taste. Formula mass-58.10, Melting point-858°C, Boiling point-1505°C, Solubility in water-92.3 g/100ml. An increase in volume occurs when dissolved in water.

Analysis        
KF- 99.300% (on dry basis)
Acidity as HF-  0.040%
Loss at 500°C - 0.350%
Chloride (Cl) - 0.005%
Potassium fluosilicate (K₂SiF₆) - 0.100%  
Sulfate (SO₄) - 0.005%                             Heavy metals (as Pb)-0.001%
Iron (Fe)-  0.001%

• Used as a source of tetrafluoroborate union
• Used in organic chemistry for fluorination reactions and as a catalyst
• Acts as lab-scale preparation of boron trifluoride
• Used in some fluxes while brazing
• Used to prepare nitrosonium tetrafluoroborate, an explosive, by reacting with nitrogen(III) oxide
• Used for synthesis of ionic liquids

• Fluoride salts are used to enhance the strength of teeth by the formation of fluorapatite, a naturally occurring component of tooth enamel.
• It is used to fluoridate water
• Used in toothpaste to prevent cavities
• Used as a cleaning agent in laundry
• Finds use in desilylation in organic synthesis
• In medical imaging, fluorine-18-labelled sodium fluoride is used in positron emission tomography (PET)

• As fluxes while soldering
• In metallic plating baths
• Fire retardant formulations for the plastics industry
• For arc quenching in circuit breakers

• Hardening and dust proofing of concrete
• In the manufacturing process of ammonium chlorate
• While the process of glass etching
• As souring agent
• Used as sand inhibitor in magnesium metal casting
• Textile Industry

• Properties		Specification
  Decamp. Temp	120°C	Assay (NH4)2SiF6	98.0% Min.
  Density	2.011 g/cm3 (20°C)	Fluoride (F)	60% Min.
  Solubility in water	555 g/L	Free Acid (H2SiF6)	0.3% Max.
  Refractive Index	1.3682	Moisture	0.6% Max.
  PH	3.3 (1% Sol.)	Water Insoluble's	0.5% Max
  Solubility	Stable under ord cond	Sulfate (SO4)	0.6% Max.

• As an electrolyte used with Tin fluoborate for Lead - Tin plating in PCB/Thin wall bearing
• While lead plating in fire extinguishers and battery connectors

• Used for manufacturing wood preservatives
• It is used in the production of soldering agents and brazing
• It is also used as a catalyst for polymerization
• It is used as a component of electrolyte and fluorine production
• It is used in glass industry for etching and manufacturing special optical glasses

• As component in fluxing and grain refining agents for aluminum and magnesium
• As active filler in resin bonded abrasives for metal treatment
• As component in fluxing agents for soldering and brazing

• Used as laundry sour
• Used as hardener for concrete
• Used as moth-proofing agent for textiles
• Used as chemical waterproofing specialties
• Used as glaze for glass & ceramics
• Used as plaster additive

• Used in wood preservation
• Used in the manufacturing of ceramics
• Used while metallurgy process of aluminum and magnesium
• While the etching process of optical glass
• Used while the processing of synthetic mica

• Hardening and dust proofing of concrete