7440-28-0

Basic information

• Product Name: Thallium
• Synonyms: Ramor;Thallium element
• CAS NO: 7440-28-0
• Molecular Formula: HTl
• Molecular Weight: 0
• EINECS: 231-138-1
• Mol File: 7440-28-0.mol

Chemical Properties

• Melting Point: 304 °C
• Boiling Point: 1457 C
• Appearance: silver-grey metal, tarnishing quickly in air
• Density: 1.01 g/mL at 25 °C
• CAS DataBase Reference: Thallium(CAS DataBase Reference)
• NIST Chemistry Reference: Thallium(7440-28-0)
• EPA Substance Registry System: Thallium(7440-28-0)

Safety Data

• RIDADR: 1707
• HazardClass: 6.1
• PackingGroup: II
• Hazardous Substances Data: 7440-28-0(Hazardous Substances Data)

Usage

InChI:InChI=1/Tl

Upstream product

• 1333-74-0 hydrogen 

Relevant articles and documents

Infrared Spectra of Thallium Hydrides in Solid Neon, Hydrogen, and Argon

Laser-ablated Tl atoms react with dihydrogen in excess neon, pure hydrogen, and excess argon to form primarily the TlH diatomic molecule. Ultraviolet irradiation increases weak bands that are identified as TlH2 and TlH3 on the basis of D2 and HD substitution and density functional theory (DFT) isotopic frequency calculations. Sample annealing fosters the dimerization of TlH to give Tl2H2 with a rhombic ring structure and the TlTlH2 isomer. The markedly lower yield of TlH3 in these experiments compared to AlH3 in earlier investigations is due to the expected decrease in stability for the Tl(III) oxidation state. The Tl+(H2)n cation complex is also observed, and trends within the group 13 metals are summarized. Excitation at 193 nm gives the 2S1/2 → 2P1/2,3/2 doublet for unreacted Tl atoms, which is blue-shifted 660 cm-1 from the gas-phase value in solid D2 but only 210 cm-1 in solid H2, owing to the smaller, more repulsive D2 matrix cage.

Infrared spectra of indium hydrides in solid hydrogen and of solid iadane

One little indium: Reactions of laser-ablated indium atoms with pure hydrogen give sharp IR absorptions corresponding to InH intermediate species. Irradiation at 193 nm maximizes further reaction to give the indane monomer InH3. Annealing provides evidence for In2H6 and ultimately InH3 → 1/2 In2 H6 → 1/n (InH3)n the sharp absorption bands are replaced with a broad IR band centered at 1460 cm-1 assigned to solid indane (InH3)n [see Equation].

2-[Para-(2-substituted or unsubstituted-3,3,3-tri-fluoropropyl)phenyl]propionic acid or a salt thereof

A novel compound of 2-[para-(2-substituted or unsubstituted-3,3,3-trifluoropropyl)phenyl]propionic acid or a salt thereof which has a specific pharmacological activity and a pharmaceutical composition comprising the novel compound as an active ingredient are disclosed.

Novel 9-substituted carbacyclin analogs

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9-Substituted carbacyclin analogs

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Process for oxidizing olefins

A process for the manufacture of an alkylene glycol having 2 - 4 carbon atoms, which comprises oxidizing an unsubstituted aliphatic olefin having 2 - 4 carbon atoms by contact with a water-soluble thallic salt in the presence of water, characterised in that at least one kind of ions selected from ions of chlorine and bromine is present in the reaction system in an amount such that the atomic ratio of the said ion or ions to thallium atom is at least 5, and said oxidation is carried out at a temperature of 120°- 200°C.