Lithium fluoride

Lithium fluoride price More Price(39)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	203645	Lithium fluoride powder, <100 μm, ≥99.98% trace metals basis	7789-24-4	5g	$54.6	2021-03-22	Buy
Sigma-Aldrich	62497	Lithium fluoride BioUltra, ≥99.0% (F)		100 g	$123	2021-03-22	Buy
Sigma-Aldrich	203645	Lithium fluoride powder, <100 μm, ≥99.98% trace metals basis	7789-24-4	25g	$183	2021-03-22	Buy
Sigma-Aldrich	62497	Lithium fluoride BioUltra, ≥99.0% (F)		500 g	$352	2021-03-22	Buy
Sigma-Aldrich	1.05686	Lithium fluoride 99.99 Suprapur?		50 g	$335.77	2021-03-22	Buy

Lithium fluoride Chemical Properties,Uses,Production

Description

Lithium Fluoride (LiF) has the lowest refractive index of all common infrared materials. It possesses the highest UV transmission of any material, being able to transmit significantly into the VUV region at the hydrogen Lyman-alpha line (121nm). Lithium fluoride can be applied in rechargeable Li batteries, in radiation dosimeter for personnel monitoring as well as radiation research, as an optical material, as a heat sink material, to produce ceramics, and to dissolve fluid fuel for molten salt reactors.

lithium fluoride crystal

Uses

Lithium Fluoride (LiF)  is a water insoluble Lithium source for use in oxygen-sensitive applications, such as metal production. It is most widely used as a flux in the production of ceramics, such as enamels, glasses and glazes. Similarly it is also used in brazing and welding fluxes and molten salt chemistry in metallurgy.
Lithium fluoride is also used for:

1. X-Ray monochromator plates as an analysis crystal: Lithium fluoride is also used for X-ray monochromator plates where its lattice spacing makes it the most useful analysis crystal.
2. Heat sink materials
3. UV transmission windows: Lithium fluoride is the material with the most extreme UV transmission of all and is used for special UV optics. Lithium fluoride transmits well into the VUV region at the hydrogen Lyman-alpha line (121nm) and beyond.

References

[1] H. Li, G. Richter, J. Maier, Reversible Formation and Decomposition of LiF Clusters Using Transition Metal Fluorides as Precursors and Their Application in Rechargeable Li Batteries, Advanced Materials, 2003, vol. 15, 736-739
[2] J. R. Cameron, F. Daniels, N. Johnson, G. Kenney, Radiation Dosimeter Utilizing the Thermoluminescence of Lithium Fluoride, Science, 1961, vol. 134, 333-334
[3] E. T. Kvamme, J. C. Earthman, D. B. Leviton, B. J. Frey, Lithium fluoride material properties as applied on the NIRCam instrument, Proc. SPIE 59,4, 2005
[4] Y. Kogure, H. Kaburaki, Y. Hiki, Low-Temperature Thermal Properties of Lithium Fluoride Containing Dislocations, Phonon Scattering in Condensed Matter, 1979, 267-270
[5] H. Naghib-zadeh, C. Glizky, I. D?rfel, T. Rabe, Low temperature sintering of barium titanate ceramics assisted by addition of lithium fluoride-containing sintering additives, Journal of the European Ceramic Society, 2010, vol. 30, 81-86
[6] M. W. Rosenthal, P. R. Kasten, R. B. Briggs, Molten-Salt Reactors – History, Status, and Potential, 1970, vol. 8, 107-117

Chemical Properties

Lithium fluoride is a white crystalline solid. It is not hygroscopic as are the other lithium halides and is not affected by exposure to the air. Lithium fluoride is the least soluble of the alkali metal fluorides. This characteristic likens it to the alkaline earth fluorides. Lithium fluoride is different from the other lithium halides in that it does not form hydrates which can be isolated from solution. Lithium fluoride does show an increase in solubility as hydrofluoric acid is added to an aqueous solution. Under these conditions the fluoride ion is converted to the bifluoride ion, HF-2, allowing further dissolving of the solid lithium fluoride.

Physical properties

White cubic crystals; refractive index 1.3915; density 2.635 g/cm³; melts at 845°C; vaporizes at 1,676°C; very slightly soluble in water 0.27 g/100g at 18°C; soluble in hydrofluoric acid; insoluble in alcohol.

Uses

The important uses of lithium fluoride are as flux in glasses, vitreous enamels and glazes; in soldering and welding aluminum; and its prisms in infrared spectrophotometers. The compound also is used for storing solar energy.

Uses

As flux for soldering and welding aluminum, in the manufacture of vitreous enamels and glazes. Lithium fluoride prisms are used in infrared spectrophotometers.

Preparation

Lithium fluoride is prepared by treating an aqueous solution of lithium hydroxide or lithium carbonate with aqueous hydrofluoric acid: LiOH + HF → LiF + H2O.

Safety Profile

Poison by ingestion and subcutaneous routes. When heated to decomposition it emits toxic fumes of F-. Used as a flux in enamels, glasses, glazes, and weldmg. See also FLUORIDES and LITHIUM COMPOUNDS.

Purification Methods

Possible impurities are LiCO3, H2O and HF. These can be removed by calcining it at red heat, then pulverizing it with a Pt pestle and storing it in a paraffin bottle. Its solubility in H2O is 0.27% at 18o. It volatilises between 1100-1200o. [Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 235 1963].

Lithium fluoride Preparation Products And Raw materials

Raw materials

Preparation Products

Lithium fluoride Suppliers

Supplier	Tel	Fax	Email	Country	ProdList	Advantage
Frapp's ChemicalNFTZ Co., Ltd.	+86 (576) 8169-6106	+86 (576) 8169-6105	sales@frappschem.com	China	886	50
Henan DaKen Chemical CO.,LTD.	+86-371-55531817		info@dakenchem.com	CHINA	21251	58
Henan Tianfu Chemical Co.,Ltd.	0371-55170693	0371-55170693	info@tianfuchem.com	CHINA	22607	55
QINGDAO HONG JIN CHEMCIAL CO.,LTD.	+86 532 83657313		hjt@hong-jin.com	CHINA	227	58
Hubei Jusheng Technology Co.,Ltd.	86-18871470254	027-59599243	linda@hubeijusheng.com	CHINA	28229	58
Hebei Guanlang Biotechnology Co., Ltd.	+8619930503282 whatapp+8619930503282	86-0311-66562153	sales3@crovellbio.com	CHINA	3931	58
Hubei xin bonus chemical co. LTD	86-13657291602	027-59338440	linda@hubeijusheng.com	CHINA	23035	58
CONIER CHEM AND PHARMA LIMITED	86-18523575427		sales@conier.com	CHINA	47494	58
career henan chemical co	13203830695 0086-371-86658258	0086-371-86658258	factory@coreychem.com	CHINA	29865	58
BEYOND INDUSTRIES (CHINA) LIMITED	+8613917686115	+862162570268	sales@beyondindustriesgroup.com	CHINA	704	58

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