Arsenic trichloride

Arsenic trichloride
Ball-and-stick model of arsenic trichloride
Names
Other names
Arsenic(III) chloride, Arsenous trichloride, Arsine trichloride, Butter of arsenic, de Valagin's solution, Trichloroarsine
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.144 Edit this at Wikidata
EC Number
  • 232-059-5
RTECS number
  • CG1750000
UNII
UN number 1560
  • InChI=1S/AsCl3/c2-1(3)4 checkY
    Key: OEYOHULQRFXULB-UHFFFAOYSA-N checkY
  • InChI=1/AsCl3/c2-1(3)4
    Key: OEYOHULQRFXULB-UHFFFAOYAG
  • Cl[As](Cl)Cl
Properties
AsCl3
Molar mass 181.28 g/mol
Appearance colourless oily liquid
Density 2.163 g/cm3, liquid
Melting point −16.2 °C (2.8 °F; 256.9 K)
Boiling point 130.2 °C (266.4 °F; 403.3 K)
Hydrolyzes
Solubility soluble in alcohol, ether, HCl, HBr, chloroform, CCl4[1]
-79.9·10−6 cm3/mol
1.6006
Viscosity 9.77 x 10−6 Pa s
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Very toxic, carcinogen, corrosive, decomposes on contact with water releasing HCl
GHS labelling:
GHS05: CorrosiveGHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H301, H310, H314, H331, H350, H410
P201, P202, P260, P261, P262, P264, P270, P271, P273, P280, P281, P301+P310, P301+P330+P331, P302+P350, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P311, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
4
0
1
Lethal dose or concentration (LD, LC):
48 mg/kg
100 mg/m3 (cat, 1 hr)
200 mg/m3 (cat, 20 min)
338 ppm (rat, 10 min)[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 [1910.1018] TWA 0.010 mg/m3[2]
REL (Recommended)
 Ca C 0.002 mg/m3 [15-minute][2]
IDLH (Immediate danger)
 Ca [5 mg/m3 (as As)][2]
Related compounds
Other anions
 Arsenic trioxide, Arsenic trifluoride
Other cations
 Antimony trichloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Arsenic trichloride is an inorganic compound with the formula AsCl3, also known as arsenous chloride or butter of arsenic. This poisonous oil is colourless, although impure samples may appear yellow. It is an intermediate in the manufacture of organoarsenic compounds.[4]

  1. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99th ed.). CRC Press. pp. 4–41. ISBN 978-1138561632.
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0038". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ "Arsenic (inorganic compounds, as As)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ Sabina C. Grund, Kunibert Hanusch, Hans Uwe Wolf "Arsenic and Arsenic Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, VCH-Wiley, 2008, Weinheim.doi:10.1002/14356007.a03_113.pub2