CAS #:

Linear Formula:


MDL Number:


EC No.:



Thallium(I) Hydroxide
Pricing > SDS > Data Sheet >

Thallium(I) Hydroxide Properties (Theoretical)

Compound Formula OHTl
Molecular Weight 221.39
Appearance Whitish to yellow needles
Melting Point N/A
Boiling Point N/A
Density 7.44 g/cm3
Solubility in H2O 34.3 g/100g
Exact Mass 221.97717 g/mol
Monoisotopic Mass 221.97717 g/mol

Thallium(I) Hydroxide Health & Safety Information

Signal Word Danger
Hazard Statements H300-H330-H373-H411
Hazard Codes T+, N
Precautionary Statements P260-P264-P270-P271-P273-P284-P301+P310-P304+P340-P310-P314-P320-P321-P330-P391-P403+P233-P405-P501
RTECS Number N/A
Transport Information UN 1707 6.1/PG II
GHS Pictograms

About Thallium(I) Hydroxide

American Elements manufactures Thallium(I) Hydroxide in both research and bulk quantities. American Elements produces materials to many standard grades when applicable including Mil Spec (military grade), ACS, Reagent and Technical Grades; Food, Agricultural and Pharmaceutical Grades, Optical, Semiconductor, and Electronics Grades, and follows applicable USP, EP/BP, and ASTM testing standards. Most materials can be produced in high and ultra high purity forms (99%, 99.9%, 99.99%, 99.999%, and higher). Standard and custom packaging is available. Additional technical, research and safety (SDS) information is available. Please request a quote above to receive pricing information based on your specifications.

Thallium(I) Hydroxide Synonyms

Thallous hydroxide

Chemical Identifiers

Linear Formula TlOH
MDL Number N/A
EC No. 234-708-8
Pubchem CID 160963
IUPAC Name thallium(1+); hydroxide
SMILES [OH-].[Tl+]
InchI Identifier InChI=1S/H2O.Tl/h1H2;/q;+1/p-1

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Thallium products. Thallium (atomic symbol: Tl, atomic number: 81) is a Block P, Group 13, Period 6 element with an atomic weight of 204.38. Thallium Bohr ModelThe number of electrons in each of thallium's shells is 2, 8, 18, 32, 18, 3 and its electron configuration is [Xe] 4f14 5d10 6s2 6p1. The thallium atom has a radius of 170 pm and a Van der Waals radius of 196 pm. Thallium was discovered by Sir William Crookes in 1861 and first isolated by Claude-Auguste Lamy in 1862. Thallium is a post-transition metal that is not found free in nature. Thallium is primarily used for its electrical conductivity as thallium sulfide, which changes with exposure to infrared light. This ability makes the compound useful in photocells. Elemental ThalliumThallium bromide-iodide crystals have been used as infrared optical materials. Thallium has also been used with sulfur, selenium or arsenic to produce low melting glasses which become fluid between 125 and 150 °C, while thallium oxide has been used to produce glasses with a high index of refraction, and is also used in the manufacture of photo cells. Its name is derived from the Greek word thallos, which means twig or green shoot.


June 18, 2021
Los Angeles, CA
Each business day American Elements' scientists & engineers post their choice for the most exciting materials science news of the day
From milk protein, a plastic foam that gets better in a tough environment

From milk protein, a plastic foam that gets better in a tough environment