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Properties of substance:
arsenic(III) fluoride
Group of substances:
inorganic
Physical appearance:
colorless liquid
Empirical formula (Hill's system for organic substances):
AsF
3
Structural formula as text:
AsF3
Molar/atomic mass: 131.917
Melting point (°C):
-6
Boiling point (°C):
62.8
Solubility (g/100 g of solvent):
benzene
: soluble [
Ref.
]
diethyl ether
: soluble [
Ref.
]
ethanol
: soluble [
Ref.
]
hydrogen fluoride
: soluble [
Ref.
]
water
: reaction [
Ref.
]
Numerical data:
LCt50 (mg·min/l): 7
Density:
2.666 (0°C, g/cm
3
)
Reactions:
[
Ref.1
]
10AsF
3
+ 3P
2
O
5
→ 6PF
5
+ 5As
2
O
3
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-957 (l)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
181.2 (l)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
126.4 (l)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
10.4
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
33.5
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-921 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
288.9 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
64.6 (g)
References:
Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 3.17
Patnaik P. Handbook of inorganic chemicals. - McGraw-Hill, 2003. - pp. 69-70
Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 522 [Russian]
Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 162-163 [Russian]
Фтор и его соединения. – Под ред. Саймонса Дж., Т. 1. - М.: ИИЛ, 1953. - pp. 92-93 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru