Lanthanum oxide , SP , 1312-81-8

Synonym(s):
Lanthanum oxide;Lanthana;Lanthanum sesquioxide;Lanthanum(III) oxide;Lanthanum⁽³⁺⁾ oxide

CAS NO.：1312-81-8

Empirical Formula: La2O3

Molecular Weight: 325.81

MDL number: MFCD00011071

EINECS: 215-200-5

PRODUCT Properties

• Melting point: 2315 °C
• Boiling point: 4200 °C
• Density: 6.51 g/mL at 25 °C(lit.)
• Flash point: 4200°C
• storage temp.: no restrictions.
• solubility: insoluble in H2O; soluble in dilute acid solutions
• form: nanopowder
• Specific Gravity: 6.51
• color: White to yellow
• PH: 9.0 (50g/l, H2O, 20℃)(slurry)
• Resistivity: 1 ∞ 10*14 (550°C) (ρ/μΩ.cm)
• Water Solubility: INSOLUBLE
• Sensitive: Hygroscopic
• Crystal Structure: Trigonal
• crystal system: Three sides
• Merck: 14,5363
• Space group: P3m1
• Lattice constant:
  • a/nm: 0.394
  • b/nm: 0.394
  • c/nm: 0.613
  • α/o: 90
  • β/o: 90
  • γ/o: 120
  • V/nm3: 0.0824
• Stability: Stable.
• LogP: 1 at 20℃

Description and Uses

Lanthanum(III) oxide is used as a precursor to LAMOX fast ion conductors and superconductors. It is also used in the manufacture of optical glasses, piezoelectric and thermoelectric material. It is also useful for X-ray imaging intensifying screens, phosphors as well as dielectric and conductive ceramics. In addition, it is used as a catalyst to effect certain organic transformations. It is one of the active ingredients and finds application in thermoelectric and piezoelectric materials.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H320-H315-H319-H335
• Precautionary statements: P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P305+P351+P338+P337+P313
• Hazard Codes: Xi
• Risk Statements: 36/37/38-36
• Safety Statements: 26-36-39
• WGK Germany: 1
• RTECS: OE5330000
• TSCA: Yes
• HS Code: 28469000
• Toxicity: LD50 orally in Rabbit: > 9968 mg/kg