Lanthanum oxide

Lanthanum(III) oxide
Lanthanum(III) oxide
Names
IUPAC name
Lanthanum(III) oxide
Other names
Lanthanum sesquioxide
Lanthana
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.819 Edit this at Wikidata
EC Number
  • 215-200-5
RTECS number
  • OE5330000
UNII
  • InChI=1S/2La.3O/q2*+3;3*-2 checkY
    Key: MRELNEQAGSRDBK-UHFFFAOYSA-N checkY
  • [O-2].[O-2].[O-2].[La+3].[La+3]
Properties
La2O3
Molar mass 325.808 g·mol−1
Appearance White powder, hygroscopic
Density 6.51 g/cm3, solid
Melting point 2,315 °C (4,199 °F; 2,588 K)
Boiling point 4,200 °C (7,590 °F; 4,470 K)
Insoluble
Band gap 4.3 eV
−78.0·10−6 cm3/mol
Structure
Hexagonal, hP5
P-3m1, No. 164
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant
GHS labelling:
GHS07: Exclamation mark[1]
Warning[1]
H315, H319, H335[1]
P261, P280, P301+P310, P304+P340, P305+P351+P338, P405, P501[1]
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability (red): no hazard codeInstability (yellow): no hazard codeSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
1
W
Flash point Non-flammable
Safety data sheet (SDS) External SDS
Related compounds
Other anions
 Lanthanum(III) chloride
Other cations
 Cerium(III) oxide
Actinium(III) oxide
Related compounds
 Lanthanum aluminium oxide,
LaSrCoO4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lanthanum(III) oxide, also known as lanthana, chemical formula La2O3, is an inorganic compound containing the rare earth element lanthanum and oxygen. It is used in some ferroelectric materials, as a component of optical materials, and is a feedstock for certain catalysts, among other uses.

  1. ^ a b c d "Lanthanum Oxide". American Elements. Retrieved October 26, 2018.