Basic information Description Uses Preparation References Safety Supplier Related
ChemicalBook >  Product Catalog >  Inorganic chemistry >  Inorganic salts >  Metal halide and Halogen salt >  Metal fluoride and salt >  LANTHANUM FLUORIDE

LANTHANUM FLUORIDE

Basic information Description Uses Preparation References Safety Supplier Related

LANTHANUM FLUORIDE Basic information

Product Name:
LANTHANUM FLUORIDE
Synonyms:
  • LaF3
  • Lanthanum fluoride (LaF3)
  • lanthanumfluoride(laf3)
  • LANTHANUM FLUORIDE, 99.9% and 99.999% (RE Element base)
  • LANTHANUM FLUORIDE (RE Element base)
  • Lanthanum(III) fluoride ,99.99%
  • Lanthanum(III) fluoride ,99.999%
  • Lanthanum(III) fluoride anhydrous, powder
CAS:
13709-38-1
MF:
F3La
MW:
195.9
EINECS:
237-252-8
Product Categories:
  • Catalysis and Inorganic Chemistry
  • Chemical Synthesis
  • Inorganics
  • Inorganic Fluorides
  • Crystal Grade Inorganics
  • metal halide
  • Lanthanum Salts
  • LanthanumMetal and Ceramic Science
  • Salts
Mol File:
13709-38-1.mol
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LANTHANUM FLUORIDE Chemical Properties

Melting point:
1493 °C
Density 
5.936 g/mL at 25 °C(lit.)
refractive index 
1.6029
solubility 
insoluble in H2O, acid solutions
form 
powder
color 
White
Specific Gravity
5.936
Water Solubility 
Soluble in strong mineral acids. Insoluble in water.
Sensitive 
Hygroscopic
Exposure limits
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
Stability:
hygroscopic
InChIKey
BYMUNNMMXKDFEZ-UHFFFAOYSA-K
CAS DataBase Reference
13709-38-1(CAS DataBase Reference)
EPA Substance Registry System
Lanthanum fluoride (LaF3) (13709-38-1)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
22-24/25
RIDADR 
3288
WGK Germany 
3
Hazard Note 
Hygroscopic
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
28469033

MSDS

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LANTHANUM FLUORIDE Usage And Synthesis

Description

Lanthanum trifluorides (chemical formula: LaF3) is a kind of high-melting, ionic compound of lanthanum and fluorine. It is a component of the multimetal fluoride glass such as ZBLAN. It is majorly used as a solid membrane electrode for manufacturing the into fluoride sensitive (F-1) Ion-selective probes. It also has applications in fiber optics, fluorescent lamps and radiation applications. Lanthanum fluoride can also be doped with Nd3+ and has special applications as a scintillating material. 

Uses

Lanthanum fluoride is used in phosphor lamp coating. Mixed with other rare earths, it is used in carbon arc electrodes and lasers. Also, the fluoride is used in the production of lanthanum metal, an intermediate step in the manufacture of high purity metal.
Lanthanum fluoride, is mainly applied in specialty glass, water treatment and catalyst, and also as the main raw materials for making Lanthanum Metal. Lanthanum Fluoride (LaF3) is an essential component of a heavy Fluoride glass named ZBLAN. This glass has superior transmittance in the infrared range and is therefore used for fiber-optical communication systems. Mixed with Europium Fluoride, it is also applied in the crystal membrane of Fluoride ion-selective electrodes.

Preparation

Lanthanum fluoride may be precipitated by adding hydrofluoric acid to an aqueous solution of lanthanum nitrate or chloride:
La(NO3)3 + 3HF → LaF3 + 3HNO3
The compound also can be made by heating lanthanum oxide with ammonium fluoride in hydrofluoric acid at 300 to 400°C. Ammonium fluoride released in the reaction sublimes at this temperature: La2O3 + 6NH4F•6HF → 2LaF3 + 6NH4F↑ + 3H2O↑
Anhydrous lanthanum fluoride also may be made by passing dry hydrogen fluoride over lanthanum oxide. This process, however, produces trace amounts of lanthanum oxyfluoride, LaOF. Highly purified material may be obtained by passing dry purified HF over molten fluoride in a platinum crucible.

References

http://172.16.24.179/www.crystran.co.uk/userfiles/files/lanthanum-fluoride-laf3-ion-selective-electrodes.pdf
https://en.wikipedia.org/wiki/Lanthanum_trifluoride
http://www.azom.com/article.aspx?ArticleID=2348

Chemical Properties

off-white powder

Physical properties

White hexagonal crystal; hygroscopic; density 5.9 g/cm3; melts at 1,493°C; insoluble in water and acids.

Uses

Lanthanum fluoride, anhydrous is employed extensively in the preparation and study of fluoride glasses.

Uses

Lanthanum fluoride is a white powder used to coat the inside of phosphorus lamps and lasers.

Flammability and Explosibility

Non flammable

Structure and conformation

The space lattice of LaF3 belongs to the tysonite structure.

LANTHANUM FLUORIDE Preparation Products And Raw materials

Raw materials

LANTHANUM FLUORIDESupplier

Tianjin Seventeen Element Technology Co. LTD Gold
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