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Metals, alloys and elements

Radium

Also known as Actinium-X, Thorium-X, Ra

CAS 7440-14-4Formula RaMolar mass 226.00 g/molEC 231-122-4
9 suppliers listed
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
CAS number
7440-14-4
Formula
Ra
Molar mass
226.00 g/mol
EC number
231-122-4
HS code
284443
Category
Metals, alloys and elements

What is Radium?

Plain description, key identifiers and synonyms

Radium atom is an alkaline earth metal atom.

Radium is a chemical element with symbol Ra and atomic number 88.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
radium
CAS number
7440-14-4 CAS number cross-checked
EC number
231-122-4
Molecular formula
Ra
UNII
W90AYD6R3Q
InChIKey
HCWPIIXVSYCSAN-UHFFFAOYSA-N
InChI
InChI=1S/Ra
SMILES (canonical and isomeric)
[Ra]

Synonyms

  • Actinium-X
  • Thorium-X
  • Ra
  • radium atom
  • radio
  • Radium element
  • Element Radium
  • Element:Radium
  • Atomic Radium
  • Element-Ra
  • Element:Ra
  • Radium (atomic)
  • Radium (element)
  • Ra (element)

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
226.00 g/molcalc.
Exact mass
226.0254 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

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Radium suppliers

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

All 9 suppliers
9 of 9 offers

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

9 suppliers in 6 countries

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Radium 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

Use classes: Radionuclides.

Pharmacology

Radium is an element with atomic symbol Ra, atomic number of 88, and atomic weight 226.0

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Radium is traded under.

HS 2844.43Indicative HS code

Radioactive elements and isotopes and compounds other than those of subheading 284410…

World exports in 2024
$2.19B
+8.8% vs 2023, imports $2.53B
2022 to 2024
Top exporters
  1. Canada32.1%
  2. Netherlands17.0%
  3. Germany11.4%
Top importers
  1. United States37.8%
  2. Germany8.4%
  3. China5.8%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Radium is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Radium?

Radium atom is an alkaline earth metal atom.

What is the CAS number of Radium?

The CAS registry number of Radium is 7440-14-4.

What is the molecular formula and weight of Radium?

The molecular formula of Radium is Ra and its molar mass is 226.00 g/mol.

What is Radium used for?

Use classes: Radionuclides.

Is Radium hazardous?

No GHS hazard classification for Radium is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Radium?

Radium is usually classified under HS code 284443 (Radioactive elements and isotopes and compounds other than those of subheading 284410…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Radium?

CompoundList lists 9 suppliers of Radium in China, India, Japan, South Korea and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Radium in India?

1 supplier in India list Radium on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Radium?

Suppliers quote Radium 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 Radium

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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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