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Properties of substance:
arsenic gray
Group of substances:
inorganic
Physical appearance:
hexagonal metal
Empirical formula (Hill's system for organic substances):
As
Structural formula as text:
As
Molar/atomic mass: 74.92
Sublimation point (°C):
615
Solubility (g/100 g of solvent):
ammonia liquid
: insoluble [
Ref.
]
diethyl ether
: insoluble [
Ref.
]
ethanol
: insoluble [
Ref.
]
mercury
: 0.0000001 (20°C) [
Ref.
]
methylene iodide
: insoluble [
Ref.
]
water
: insoluble [
Ref.
]
Numerical data:
Hardness on the Mohs’ scale: 3.5
Density:
5.72 (20°C, g/cm
3
)
5.24 (817°C, g/cm
3
)
Vapour pressure (Torr):
0.1 (317°C)
1 (371°C)
10 (437°C)
100 (519°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
0 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
0 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
36.6 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
24.7 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
22
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
32
LD
50
(mg/kg):
763 (rats, oral)
144 (mice, oral)
1000 (mice, intraperitoneal)
References:
Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 297
Вредные химические вещества: Неорганические соединения элементов V-VIII групп. Справочник. - Л., 1989. - pp. 82-102 [Russian]
Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 513, 516 [Russian]
Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
Немодрук А.А. Аналитическая химия мышьяка. - М.: Наука, 1976. - pp. 7-13 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 82 [Russian]
Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 156-157 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru