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Scandium

Scandium structure

CAS No:
7440-20-2
Formula:
Sc
Chemical Name:
Scandium
Synonyms:
Scandium;Scandium-45;Scandium element;14391-83-4;195161-76-3
Categories:
Inorganic Chemistry > Elementary Substance

Description

grey powder

Scandium atom is a rare earth metal atom, a scandium group element atom and a d-block element atom.|An element of the rare earth family of metals. It has the atomic symbol Sc, atomic number 21, and atomic weight 45.

Scandium Basic Attributes

Molecular Weight：

44.96

Exact Mass：

44.955910

EC Number：

231-129-2

DSSTox ID：

DTXSID9064689

Characteristics

PSA：

XLogP3：

0.00000

Appearance：

Silver-gray powder

Density：

3.05 g/cm³

Melting Point：

1400 °C

Boiling Point：

2836 °C(lit.)

Water Solubility：

Reacts with water.Slowly dissolve in dilute acids.

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 3089 4.1/PG 2

wgk germany：

hazard class code：

5-11-34-23/24/25-36/37/38-36/38

safety instructions：

26-28-36/37-7/9-36/37/39-16-43-45-27

Marks：

F,T,Xi

Precautionary statement(s)：

P210

Hazard Statements：

H228

GHS Classification：

|Warning|H228 (95.74%): Flammable solid [Danger Flammable solids]|P210, P240, P241, P280, and P370+P378|Aggregated GHS information provided by 52 companies from 5 notifications to the ECHA C&L Inventory.

Drug Information

MeSH Entry Terms：

Scandium

Scandium Use and Manufacturing

Uses

Scandium is mainly used in ceramics, lasers, phosphors and crystal. Scandium Oxide is suitable for the high index component of UV, AR and bandpass coatings due to its high index value, transparency, and layer hardness make high damage thresholds have been reported for combinations with Silicon Dioxide or Magnesium Fluoride for use in AR.
Scandium Metal is applied in various superalloys which show excellent metallic performance with their light gravaty. The main application of Scandium by weight is in Scandium-Aluminium alloys for minor aerospace industry components. They were used in the Russian military aircraft, specifically the MiG-21 and MiG-29. Some items of sports equipment, which rely on high performance materials, have been made with Scandium-Aluminium alloys. Employed in solid state synthesis of unusual clusters, Sc19Br28Z4, (Z=Mn, Fe, Ru or Os). These clusters are of interest for their structure and magnetic properties. Scandium was not produced in any quantities until the late 1930s. Its light weight,resistance to corrosion, and high melting point made it especially useful in the aerospaceindustries. In the early 1940s contractors for the U.S. Air Force appropriated almost all of thescandium metal for use in the construction of military aircraft. The pure metal form is produced by the electrolysis of a salt of scandium, ScCl
3
. The metal has found some other uses in high-intensity lamps that produce a natural spectrum, making it useful for stadium lighting.It is also used in nickel alkaline storage batteries. Several compounds are used as catalysts tospeed up chemical reactions. The radioactive scandium-46 (with a half-life of 83.8 days) emitsbeta radiation. This property makes it useful as a radioactive tracer in the petroleum industryto monitor fractionation products.

Manufacturing Info：

Scandium: ACTIVE

Computed Properties

Molecular Weight:44.95591
Exact Mass:44.955907
Monoisotopic Mass:44.955907
Heavy Atom Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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