Arsenic trichloride

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Arsenic trichloride

General
Other names	Arsenic(III) chloride butter of arsenic
Molecular formula	AsCl₃
Molar mass	246.041 g/mol
Appearance	yellow-orange powder or crystals
CAS number	[7784-34-1]
Properties
Density and phase	2.15 g/cm³, solid
Solubility in water	decomposes
Melting point	310°C
Boiling point	707°C
Vapor Pressure	1 mm Hg (23.5°C)
Hazards
EU classification	not listed
NFPA 704
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) [Chemical infoboxInfobox disclaimer and references]

Arsenic trichloride (As Cl₃) is a chemical compound. When stored, it must be kept away from sunlight, water and moisture.

This compound may be prepared under a lab hood by reacting reagent grade Arsenic trioxide with reagent grade Thionyl chloride. Copious quantities of sulfur dioxide are released.

External links

For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].

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