CompoundList
Sign in
Metals, alloys and elements

Dithallium

Also known as dithallene, thallium dimer, Thallium, mol. (Tl2)

CAS 76939-73-6Formula Tl2Molar mass 408.77 g/mol
Get quotes Safety data
Dithallium chemical structure, Tl2, CAS 76939-73-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
76939-73-6
Formula
Tl2
Molar mass
408.77 g/mol
HS code
811251
Category
Metals, alloys and elements

What is Dithallium?

Plain description, key identifiers and synonyms

Dithallium is an elemental thallium that consists of two thallium atoms joined via a triple bond.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
thallanylidynethallane
CAS number
76939-73-6
Molecular formula
Tl2
InChIKey
AVFCREGJOCVASG-UHFFFAOYSA-N
InChI
InChI=1S/2Tl
SMILES (canonical and isomeric)
[Tl]#[Tl]

Synonyms

  • dithallene
  • thallium dimer
  • Thallium, mol. (Tl2)
  • 1lambda~1~,2lambda~1~-Dithallane

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
408.77 g/molcalc.
Exact mass
409.9489 Dacalc.
LogP (octanol/water)
-0.76calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
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.

Dithallium suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Dithallium can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Dithallium 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.

Get latest price

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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 8112.51Indicative HS code

Unwrought thallium, powders

Our trade statistics cover HS chapters 25 to 40 (minerals, chemicals, plastics and rubber). This code is in chapter 81, metals, which is not included yet.

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

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

Frequently asked questions

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

What is Dithallium?

Dithallium is an elemental thallium that consists of two thallium atoms joined via a triple bond.

What is the CAS number of Dithallium?

The CAS registry number of Dithallium is 76939-73-6.

What is the molecular formula and weight of Dithallium?

The molecular formula of Dithallium is Tl2 and its molar mass is 408.77 g/mol.

Is Dithallium hazardous?

No GHS hazard classification for Dithallium 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 Dithallium?

Dithallium is usually classified under HS code 811251 (Unwrought, powders). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dithallium?

Post a free request on CompoundList and suppliers of Dithallium will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Dithallium?

Suppliers quote Dithallium 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 Dithallium

Get quotes for Dithallium

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Dithallium
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Dithallium with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/dithallium-76939-73-6" title="Dithallium structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Metals, alloys and elements or HS code 811251

Price on request
Free quotes, contact stays private
Get quotes