Lanthanum oxide manufacturers and suppliers in india

Lanthanum oxide

Properties

Melting point:: 2315 °C

Boiling point:: 4200 °C

Density: 6.51 g/mL at 25 °C(lit.)

bulk density: 1300kg/m3

Flash point:: 4200°C

storage temp.: no restrictions.

solubility: insoluble in H2O; soluble in dilute acid solutions

form: nanopowder

color: White to yellow

Specific Gravity: 6.51

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	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.394	0.394	0.613	90	90	120	0.0824

Stability:: Stable.

LogP: 1 at 20℃

CAS DataBase Reference: 1312-81-8(CAS DataBase Reference)

EPA Substance Registry System: Lanthanum oxide (La2O3) (1312-81-8)

Safety Information

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

Use

Lanthanum oxide (La2O3) has a melting pointof 2250°C, is soluble in acids, and very slightlysoluble in water. This oxide of a rare earth elementoccurs in monazite and bastnasite. It ismarketed as the oxide or as other salts such asthe oxalate, nitrate, or hydrate. It quicklyabsorbs water and CO2 from the atmosphere.Its chief use is as an ingredient in nonsilica,rare element optical glass with oxides of tungsten, tantalum, and thorium. Lanthanumincreases refractive index, decreases dispersion,and is also used in x-ray image intensifyingscreens that speed up x-ray exposure asmuch as two to ten times so that diagnosticdosages may be reduced by as much as 80%with fewer retakes. It is also used in bariumtitanate capacitors.