Thursday, April 26, 2012

the uses of Magnesium Fluoride


Use of Magnesium Fluoride
Used in the manufacture of ceramics, glass; the flux of themetallurgy of magnesium metal; coating of optical instruments,lenses and filters; the fluorescent material of the cathode ray screen;flux.
Preparation or sources
Mainly from the fluoride in the mineral periclase.
Laboratory, magnesium carbonate water transfer paste, graduallypour the reaction dilute half of hydrofluoric acid, the precipitate at400 ° C drying derived.
Toxicity and protective 
Magnesium Fluoride is toxic, the operator should wear the necessaryprotective equipment, poisoning, you should drink a lot of egg whiteand hospital.
Chemical properties of Magnesium Fluoride
Less active MgF2 chemical properties of ionic crystals, do not react with strong oxidizers, nitric acid can be dissolved:
Of MgF2 +2 HNO3 == of Mg (NO3) 2 +2 HF

Saturday, April 21, 2012

Specifications of Potassium Fluoborate

Potassium Fluoborate
Molecular formula:KBF4
Molecular weight :125.90
Properties: white granular crystal
Melting point :530°C
Assay :≥99%
Appearance White free flowing powder
Density at 25 degree Celcius 2.68
Potassium Fluoborate is also known as Potassium terafluoroborate and available in white crystalline powder. It is used for various applications such as a component in fluxing and grain refining agents for Aluminium and Magnesium. It can also be used as active filler in resin bonded abrasives for metal treatment and a component in fluxing agents for soldering and brazing.
More about: Potassium Fluoborate sale
Read more: Fluorides

Friday, April 20, 2012

the applications of Lithium fluoride

In aqueous salts
Fluorine is produced by the electrolysis of aqueous potassium bifluoride. This electrolysis gain added calmly if the electrolyte contains a few percent of LiF, possibly because it facilitates accumulation of Li-C-F interface on the carbon electrodes. A advantageous aqueous salt, FLiNaK, consists of a admixture of Lithium fluoride, calm with sodium fluoride and potassium fluoride. THe primary coolant for the aqueous alkali reactor agreement was FLiBe; LiF-BeF_2 (66-33 mol%).
Optics
Because of its ample bandage gap, Lithium fluoride crystals are cellophane to abbreviate amicableness ultraviolet radiation, added so than any added material. LiF is accordingly acclimated in specialized UV optics.
Radiation detectors
It is aswell acclimated as a agency to almanac ionizing radiation acknowledgment from gamma rays, beta particles, and neutrons (indirectly, application the 6
3Li (n,alpha) nuclear reaction) in thermoluminescent dosimeters.
Nuclear reactors
Lithium fluoride (highly accomplished in the accepted isotope lithium-7) forms the basal basic of the adopted fluoride alkali admixture acclimated in liquid-fluoride nuclear reactors. Typically lithium fluoride is alloyed with beryllium fluoride to anatomy a abject bread-and-butter (FLiBe), into which fluorides of uranium and thorium are introduced. Lithium fluoride is awfully chemically abiding and LiF/BeF2 mixtures (FLiBe) accept low melting credibility (360 C - 459 C) and the best neutronic backdrop of fluoride alkali combinations adapted for reactor use. MSRE acclimated two altered mixtures in the two cooling circuits.


Tuesday, March 27, 2012

What is Lithium fluoride used for?

Lithium fluoride is an inorganic combine with the formula LiF. It is the lithium salt of hydrofluoric acid.  It is a simple ionic compound. Its structure is analogous to that of sodium chloride, but it is  less meltable in water. It is mainly used as a component part of molten salts.
Lithium fluoride is geared up from lithium hydroxide and hydrogen fluoride or by dissolving lithium carbonate in excess hydrogen fluoride, evaporating to dryness and heating to red heat.
Fluorine is produced by the electrolysis of molten potassium bifluoride. This electrolysis proceeds more efficiently while the electrolyte takes a few percent of LiF, maybe because it facilitates formation of Li-C-F interface on the carbon electrodes. A valuable molten salt consists of a commixture of LiF, conjointly with sodium fluoride and potassium fluoride
Lithium fluoride is also applied as a means to record ionizing radiation exposure from gamma rays, beta particles, and neutrons (indirectly, using the 6
3Li (n,alpha) nuclear reaction) in thermoluminescent dosimeters.
Lithium fluoride is widely applied in PLED as a coupling layer to raise electron injection. The heaviness of LiF layer is usually approximately 1 nm.