Complaint
Lanthanum Metal is a cast silver-gray metal that is easily oxidized in the air. Lanthanum metal is used as an important additive or alloying element for the production of special steel, non-ferrous metal alloys, and hydrogen storage materials, and it can also be used as a reducing agent for the production of other metals.
Yttrium
Yttrium;Yttrium-89;Yttrium element;110123-45-0;27151-36-6
7440-65-5
InChIKey=VWQVUPCCIRVNHF-UHFFFAOYSA-N
88.91
88.905846
231-174-8
58784XQC3Y
3178
DTXSID0049816
C28199
Iron-gray, lustrous powder; darkens on exposure to light|Hexagonal, silvery-metallic colored element...gray-black when finely divided. Brittle...harder than zinc.
Precious Metal Catalysts
Not classified.
| Pictogram(s) | No symbol. |
|---|---|
| Signal word | No signal word |
| Hazard statement(s) | none |
| Precautionary statement(s) | |
| Prevention | none |
| Response | none |
| Storage | none |
| Disposal | none |
0
0.00000
Gray powder
4.84 g/cm3 @ Temp: 18 °C
1477 °C
3338 °C(lit.)
Insoluble in water
Flammables area
0 mmHg (approx)
Noncombustible Solid in bulk form.
Odorless
Natural yttrium contains but one isotope, yttrium-89. Forty-three other unstable isotopes and isomers have been characterized.|Oxidizes on heating in air or oxygen; decomposes on cold water slowly, in boiling water rapidly.|Known only in the tripositive state|Heat of fusion = 11.43 kJ/mol; Heat of sublimation = 424.7 kJ/mol at 25 °C|Standard enthalpy of formation at 298.15 K, 0.0 kJ/mol (crystal); entropy at 298.15 K, 44.4 J/mol-K (crystal); Heat capacity, 26.5 J/mol-K (crystal); Standard enthalpy of formation at 298.15 K, 421.3 kJ/mol (gas phase); Gibbs free energy of formation, 381.1 kJ/mol (gas phase); entropy at 298.15 K, 179.5 J/mol-K (gas phase); Heat capacity 25.9 J/mol-K (gas phase).
Light sensitive Moisture sensitive Air sensitive
Metals, Elemental and Powder, Active
Strong Reducing Agent
YTTRIUM in bulk is stable in air due to the formation of oxide films. Powder or dust is light-sensitive and air-sensitive and flammable in the air and (Hazardous Chemicals Desk Reference, p. 861 (1987)). Reacts with water to form gaseous hydrogen (H2). Reacts with strong oxidizing agents, strong acids, strong bases, and halogens. The products of these reactions are irritating and toxic.
Noncombustible Solid in bulk form.
