Arsenic trichloride

  • Arsenic trichloride
  • Arsenic butter

Colorless, oily, fuming in air liquid

Liquid

2.16 g · cm -3

-8.5 ° C

130.2 ° C

13 hPa ( 20 ° C)

With water exothermic reaction

1.59 (8 ) D ( 5.3 x 10-30 C · m)

1.604 ( 16 ° C)

Risk

Not determined, as carcinogenic

  • 48 mg · kg -3 ( LD50, rat, oral)
  • 80 mg · kg -3 ( LD50, rat, transdermal)

-305.0 KJ / mol

Template: Infobox chemical / molecular formula search available

Arsenic trichloride is a chemical compound of arsenic and chlorine with the formula AsCl3. It is a colorless, oily liquid which fumes in the air.

Production and representation

Arsenic trichloride can be recovered by combustion of arsenic in chlorine gas:

The starting material can also arsenic (III ) oxide are used, is passed through the anhydrous hydrogen chloride at 180-200 ° C:

A further possibility is the production of arsenic trioxide, sulfur and chlorine.

Properties

Arsenic trichloride decomposes on heating and under influence of light. Humidity in the air it forms corrosive fumes of hydrogen chloride and toxic arsenic (III ) oxide. It reacts violently with strong oxidizing agents, water, and bases.

Use

Arsenic trichloride is used for etching and burnishing of metals.

CAS registry number Vapor pressure Electric dipole moment Debye Dangerous Substances Directive (67/548/EEC) Chemical element Sulfur dichloride CRC Handbook of Chemistry and Physics
79905
de