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Lanthanum(III) chloride

Basic information Physical Properties Uses Preparation Reactions Safety Related Supplier
Lanthanum(III) chloride Basic information
Lanthanum(III) chloride Chemical Properties
  • Melting point:860 °C(lit.)
  • Boiling point:1812 °C(lit.)
  • Density 3.84 g/mL at 25 °C(lit.)
  • Flash point:1000°C
  • form beads
  • color White to almost white
  • Specific Gravity3.842
  • Water Solubility Soluble in water.
  • Sensitive Hygroscopic
  • Merck 14,5363
  • Stability:Stability
  • CAS DataBase Reference10099-58-8(CAS DataBase Reference)
  • EPA Substance Registry SystemLanthanum chloride (LaCl3) (10099-58-8)
Safety Information
MSDS
Lanthanum(III) chloride Usage And Synthesis
  • Physical PropertiesThe anhydrous chloride is a white hexagonal crystal; hygroscopic; density 3.84 g/cm3; melts at 850°C; soluble in water. The heptahydrate is a white triclinic crystal; decomposes at 91°C; soluble in water and ethanol.
  • UsesLanthanum(III) chloride is used to prepare other lanthanum salts. The anhydrous chloride is employed to produce lanthanum metal.
  • PreparationLanthanum(III) chloride is formed by dissolving the oxide, hydroxide or carbonate in hydrochloric acid, followed by crystallization. The anhydrous chloride is obtained by heating oxide, hydroxide, or carbonate in an atmosphere of dry hydrogen chloride.
    La2(CO3)3 + 6HCl → 2LnCl3 + 3CO2 + 3H2O
    Another method involves heating lanthanum oxide with excess ammonium chloride at 300°C.
  • ReactionsWhen heated in the presence of water vapor, lanthanum oxochloride is formed:
    LaCl3 + H2O→LaOCl + 2HCl
    Heating with glass at elevated temperatures also forms oxochloride:
    LaCl3 + SiO2→2LaOCl + SiCl4
    Lanthanum chloride reacts with hydrogen sulfide when heated at 1100°C, forming lanthanum sulfide:
    2LaCl3 + 3H2S→La2S3 + 3H2S
    Reactions with ammonia and phosphine at elevated temperatures yield lanthanum nitride and phosphide, respectively:
    LaCl3 + PH3→LaP + 3HCl
    Lanthanum chloride is reduced to lanthanum metal when heated with an alkali or alkaline earth metal at temperatures above 1000°C:
    LaCl3 + 3Li→La + 3LiCl
  • Chemical PropertiesLanthanum(III) chloride is white powder or colourless crystals
  • UsesLanthanum chloride is used to prepare other lanthanum salts. The anhydrous chloride is employed to produce lanthanum metal.
  • PreparationThe heptahydrate is formed by dissolving the oxide, hydroxide or carbonate in hydrochloric acid, followed by crystallization. The anhydrous chloride is obtained by heating oxide, hydroxide, or carbonate in an atmosphere of dry hydrogen chloride.
    La2(CO3)3 + 6HCl → 2LnCl3 + 3CO2 + 3H2O
    Another method involves heating lanthanum oxide with excess ammonium chloride at 300°C.
  • General DescriptionLanthanum(III) chloride is white crystalline solid. Gives an amber aqueous solution that can cause destruction or irreversible alterations in human skin tissue at the site of contact. Has a severe corrosion rate on steel.
  • Air & Water ReactionsDeliquescent. Water soluble.
  • Reactivity ProfileAqueous solutions of LANTHANUM CHLORIDE contain moderate concentrations of hydrogen ions and react as acids to neutralize bases. Does not usually react as either oxidizing agents or reducing agents but such behavior is not impossible. May catalyze organic reactions.
  • Health HazardTOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
  • Fire HazardNon-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Lanthanum(III) chloride Preparation Products And Raw materials
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