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Rare earth compounds

Scandium

Also known as Sc, Scandium Metallicum, scandium atom

CAS 7440-20-2Formula ScMolar mass 44.96 g/molEC 231-129-2
GHS signal word: Danger. Pictograms: Flammable 53 suppliers listed Drug substance
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
Physical form
Solid
Boiling point
2,836 °C
Density
2.989 @25 °C
HS code
280530
Category
Rare earth compounds
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Scandium?

Plain description, key identifiers and synonyms

Scandium atom is a rare earth metal atom, a scandium group element atom and a d-block element atom.

Scandium is a chemical element with symbol Sc and atomic number 21.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
scandium
CAS number
7440-20-2 CAS number cross-checkedOther or deprecated CAS: 43238-07-9
EC number
231-129-2
Molecular formula
Sc
UNII
YUJ4U1EW7R
MDL number
MFCD00016323
InChIKey
SIXSYDAISGFNSX-UHFFFAOYSA-N
InChI
InChI=1S/Sc
SMILES (canonical and isomeric)
[Sc]

Synonyms

  • Sc
  • Scandium Metallicum
  • scandium atom
  • Scandium ingot
  • scandium metal
  • scandium-45
  • escandio
  • Scandium - Sc @ 1000 microg/g in Hydrocarbon Oil
  • Scandium Standard: Sc @ 10 microg/mL in 2% HNO3
  • Scandium Std - Sc @ 5000microg/g in 75 cSt Oil
  • Scandium Standard: Sc @ 1000 microg/mL in 5% HNO3
  • Scandium Standard: Sc @ 10000 microg/mL in 5% HNO3
  • Scandium Standard: Sc @ 2000 microg/g in Hydrocarbon Oil
  • Skandium
  • Scandium Internal Standard: Sc @ 10 microg/mL in 2% HNO3
  • Scandium powder
  • Atomic Scandium
  • Scandium element
  • Element Scandium
  • Element-Sc
  • Element:Sc
  • Element:Scandium
  • 45Sc isotope
  • Sc (element)
  • Scandium (atomic)
Show all 38 synonyms
  • Isotope:45Sc
  • Scandium (element)
  • 45Sc (isotope)
  • Sc Standard Solution
  • Scandium-45 isotope
  • Isotope:Scandium-45
  • 21Sc
  • Scandium pieces, distilled dendritic
  • Scandium rod, 12.7mm (0.5in) dia
  • Scandium foil, 0.1mm (0.004in) thick
  • Scandium foil, 0.25mm (0.01in) thick
  • Scandium - Sc @ 1000 microg/mL in 5% HNO3
  • Scandium arc-cast pellet, 15.9mm (0.63in) dia

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Solidexp.
Boiling point
2,836 °Cexp.
Density
2.989 @25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
44.96 g/molcalc.
Exact mass
44.9559 Dacalc.
LogP (octanol/water)
0calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable

Hazard statements

  • H228Flammable solid.
Precautionary statements (5)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P370 + P378In case of fire: Use appropriate media to extinguish.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Scandium suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 53 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

53 suppliers in 10 countries

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Scandium price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Scandium is traded under.

HS 2805.30Exact HS code

Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed

World exports in 2024
$385M
+7.4% vs 2023, imports $503M
2019 to 2024
Top exporters
  1. Vietnam * partner reported50.6%
  2. China24.9%
  3. Thailand17.1%
Top importers
  1. Japan49.0%
  2. Malaysia25.5%
  3. Vietnam * partner reported8.2%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Scandium is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Scandium, based on the data on this page

What is Scandium?

Scandium atom is a rare earth metal atom, a scandium group element atom and a d-block element atom.

What is the CAS number of Scandium?

The CAS registry number of Scandium is 7440-20-2. Other or deprecated CAS numbers: 43238-07-9.

What is the molecular formula and weight of Scandium?

The molecular formula of Scandium is Sc and its molar mass is 44.96 g/mol.

Is Scandium hazardous?

Scandium carries the GHS signal word "Danger". Main hazards: flammable solid. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Scandium?

Scandium is usually classified under HS code 280530 (Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Scandium?

CompoundList lists 53 suppliers of Scandium in United States, China, Germany, United Kingdom and 6 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Scandium?

Suppliers quote Scandium on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Scandium

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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