Arsenic trifluoride

Arsenic trifluoride

Colorless, fuming at the air liquid

Liquid

2.7 g · cm -3

-6 ° C

58 ° C

• Decomposition in water
• Soluble in diethyl ether, ethanol, and benzene

2.59 (5 ) D ( 8.6 x 10-30 C · m)

Risk

-821.3 KJ / mol

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Arsenic trifluoride is a chemical compound consisting of the elements arsenic and fluorine.

Extraction

Arsenic trifluoride can reaction of anhydrous hydrogen fluoride with arsenic (III ) oxide are produced at 140 ° C.

It is also accessible by reaction of arsenic trioxide with fluorosulphonic.

Properties

Arsenic trifluoride is a colorless liquid which fumes in the air and attacks glass. Your enthalpy of formation is -305.0 kJ / mol. It is a weaker Lewis base than Phosphortrifluorid ( PF3 ), but a stronger Lewis acid than this. From arsenic trifluoride the ions asf2 and direct - ASF4 from arising in the pure substance by autoionization in equal parts.

Use

Arsenic trifluoride is used for ion implantation, and for the production of arsenic (V ) fluoride.

Safety

Arsenic trifluoride is classified as carcinogenic and very toxic.