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- Thulium Metal (Tm) Synonyms:
thulium metal powder, thulium lump, thulium chips, thulium pieces, thulium foil, thulium sheet, thulium targets, CAS# 7440-30-4,
Chemical Name: Thulium
Chemical Formula: Tm
The least abundant of the rare earth elements, thulium occurs in small quantities along with other rare earths in many minerals. It is silvery-gray, soft malleable, ductile, and can be cut with a knife. The pure metal is bright and lustrous and reasonably stable in air.
99.9%, and 99.99%,
Pieces, lump, granules, and foil
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Atomic Number
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69
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Molecular Weight (g/mol.)
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168.934
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Apparent Density (g/cm3)
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9.33
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Magnetic Ordering
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paramagnetic
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Specific Heat @25°C (cal/g-°C)
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.038
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Melting Point (°C)
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1545
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Boiling Point (°C)
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1727
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Thermal Conductivity (W/cm/oK @ 298.2 oK)
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0.169
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Brinell Hardness
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2
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Surface Area (m2/g)
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Atomic Radius (pm)
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176
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Vickers Hardness (MPa)
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520
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Color
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silvery gray
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Crystallography
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hexagonal structure
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Thulium has few important uses. Thulium produces an isotope that emits x-rays. Small pellets can be used as a portable source of diagnostic x-rays for medical use. Another application of thulium is in magnetic ceramic materials.
Ampouled under argon
Listed. For further information please call the E.P.A. at 202.554.1404
CAS# 7440-30-4
1383 (powder) and 3178 (other)
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