Description
Soft silvery-white metal in bulk. Dark-gray to black odorless powder. Mp: 1509°C; bp 2927°C. Density: 4.47 g cm-3 at 20°C. May irritate the respiratory tract if inhaled as a powder. May irritate the digestive tract if swallowed. Vapors may cause dizziness or suffocation.;Solid;Dark-gray to black, odorless powder. Soft silvery-white metal in bulk.;Dark-gray to black, odorless solid.
Synonyms
Yttrium, powder, 500 max. part. size (micron), weight 100 g, purity 99.9%; Yttrium, foil, not light tested, 50x50mm, thickness 0.025mm, as rolled, 99%; Yttrium, plasma standard solution, Specpure(R), Y 1000microg/ml; Yttrium, powder, max. particle size 500 micron, weight 50 g, purity 99.9%; Yttrium powder, -40 mesh; Yttrium foil, 0.64mm (0.025in) thick; Yttrium, lump, 50 mm max. lump size, weight 100 g, purity 99.9%; Yttrium, foil, thickness 0.25 mm, diameter 15 mm, purity 99%; Yttrium rod, 12.7mm (0.5in) dia; Y(2+);
IUPAC Name
yttrium
Molecular Weight
88.9058g/mol
Molecular Formula
Y
InChI
InChI=1S/Y
InChI Key
VWQVUPCCIRVNHF-UHFFFAOYSA-N
Boiling Point
5301 °F at 760 mm Hg (NIOSH, 2016);3345 °C;5301°F;5301°F
Melting Point
2732 °F (NIOSH, 2016);1522 °C;1526°C;2732°F;2732°F
Density
4.47 (NIOSH, 2016);4.47 g/cu cm;4.47;4.47
Solubility
Soluble in hot H₂O (NIOSH, 2016);Decomposes in water;Soluble in dilute acids and potassium hydroxide solution;Soluble in hot H₂O
Storage
Flammables area
Color Form
Iron-gray, lustrous powder; darkens on exposure to light;Hexagonal, silvery-metallic colored element...gray-black when finely divided. Brittle...harder than zinc.
Complexity
0
Covalently-Bonded Unit Count
1
EC Number
231-174-8
Exact Mass
88.90584g/mol
Formal Charge
0
H-Bond Acceptor
0
H-Bond Donor
0
Heavy Atom Count
1
MeSH Entry Terms
Yttrium
Monoisotopic Mass
88.90584g/mol
Odor
Odorless
Other Experimental
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).
Rotatable Bond Count
0
Topological Polar Surface Area
0A^2
UNII
58784XQC3Y
UN Number
3178
Vapor Pressure
0 mm Hg (approx) (NIOSH, 2016);6.66X10-11 Pa at 1000 K; 2.96x10-7 Pa at 1200 K; 1.17x10-4 Pa at 1400 K; 1.02x10-2 Pa at 1600 K; 0.316 Pa at 1800 K; 4.27 Pa at 2000 K; 35.9 Pa at 2200 K;0 mmHg (approx);0 mmHg (approx)
