Selenium monochloride

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Selenium monochloride
IUPAC name Selenium monochloride
Other names Dichlorodiselenide, Diselenium dichloride, Selenium chloride, 1,2-dichlorodiselane
CAS number 10025-68-0
Molecular formula Se2Cl2
Molar mass 228.83 g/mol
Appearance Reddish-brown oily liquid
Density 2.7741 g/cm3
Melting point

-85 °C (223.15 K)

Boiling point

127 °C at 0.997 atm (400.15 K at 0.997 atm)

Solubility in water insoluble; sol in CHCl3, CS2, MeCN
Solubility Soluble in dry chloroform and carbon disulfide
R-phrases 23/24/25-34
S-phrases 22-26-36/37/39-45
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Selenium monochloride, also known as selenium(I) chloride or diselenium dichloride, is a chemical compound. Its chemical formula is Se2Cl2. It contains selenium in its +1 oxidation state. It also contains chloride ions.

Properties[change | change source]

It is a reddish brown oily liquid.

Preparation[change | change source]

It can be made by reacting selenium, selenium dioxide, and hydrochloric acid. It can be made though by just reacting chlorine with selenium. Another way to make it is reacting oleum and hydrochloric acid with selenium.

Uses[change | change source]

It can be used to add selenium to other chemical compounds.

Related pages[change | change source]