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Rare earth compounds

Terbium

Also known as TB, Terbium Metallicum, terbium atom

CAS 7440-27-9Formula TbMolar mass 158.93 g/molEC 231-137-6
GHS signal word: Danger. Pictograms: Flammable 48 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
3,230 °C
Density
8.234 @25 °C
HS code
280530
Category
Rare earth compounds
Illustrative photo, closed jumbo bulk bags in a warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Terbium?

Plain description, key identifiers and synonyms

Terbium atom is a lanthanoid atom and a f-block element atom.

Terbium is a chemical element with symbol Tb and atomic number 65.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
terbium
CAS number
7440-27-9 CAS number cross-checkedOther or deprecated CAS: 13598-54-4
EC number
231-137-6
Molecular formula
Tb
UNII
06SSF7P179
MDL number
MFCD00011256
InChIKey
GZCRRIHWUXGPOV-UHFFFAOYSA-N
InChI
InChI=1S/Tb
SMILES (canonical and isomeric)
[Tb]

Synonyms

  • TB
  • Terbium Metallicum
  • terbium atom
  • terbio
  • Terbium ingot
  • Terbium foil
  • Terbium-159
  • Terbium ingot, Terbium foil,
  • Terbium Standard: Tb @ 10 microg/mL in 2% HNO3
  • Terbium Standard: Tb @ 1000 microg/mL in 5% HNO3
  • Terbium Standard: Tb @ 10000 microg/mL in 5% HNO3
  • ICP-MS Internal Standard: Tb @ 100 ug/mL in 2% HNO3
  • Terbium Internal Standard: Tb @ 10 microg/mL in 2% HNO3
  • terbium metal
  • Terbium element
  • Terbium chips
  • Terbium pieces
  • Terbium powder
  • Atomic Terbium
  • Element Terbium
  • Element:Terbium
  • Element-Tb
  • Element:Tb
  • Terbium (atomic)
  • Tb (element)
Show all 37 synonyms
  • Terbium (element)
  • 159Tb isotope
  • Isotope:159Tb
  • Tb Standard Solution
  • 159Tb (isotope)
  • Terbium-159 isotope
  • Isotope:Terbium-159
  • Terbium, elemental
  • 65Tb
  • Ultra Thin Terbium Nanofoil
  • Terbium Nanoparticle Dispersion
  • Terbium pieces, distilled dendritic

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
3,230 °Cexp.
Density
8.234 @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
158.93 g/molcalc.
Exact mass
158.9253 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

Terbium suppliers

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

All 48 suppliers
30 of 30 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

48 suppliers in 11 countries

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Terbium 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 Terbium is traded under.

HS 2805.30Indicative 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 Terbium is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Terbium?

Terbium atom is a lanthanoid atom and a f-block element atom.

What is the CAS number of Terbium?

The CAS registry number of Terbium is 7440-27-9. Other or deprecated CAS numbers: 13598-54-4.

What is the molecular formula and weight of Terbium?

The molecular formula of Terbium is Tb and its molar mass is 158.93 g/mol.

Is Terbium hazardous?

Terbium 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 Terbium?

Terbium 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 Terbium?

CompoundList lists 48 suppliers of Terbium in United States, China, Germany, Spain and 7 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 Terbium?

Suppliers quote Terbium 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 Terbium

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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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