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Properties of substance:
iron
Group of substances:
inorganic
Physical appearance:
cubic metal
Empirical formula (Hill's system for organic substances):
Fe
Structural formula as text:
Fe
Molar/atomic mass: 55.85
Melting point (°C):
1539
Boiling point (°C):
2870
Solubility (g/100 g of solvent):
diethyl ether
: insoluble [
Ref.
]
ethanol
: insoluble [
Ref.
]
lithium molten
: 0.002 (700°C) [
Ref.
]
magnesium fused
: 0.05 (700°C) [
Ref.
]
magnesium fused
: 0.265 (1000°C) [
Ref.
]
mercury
: 0.0000015 (25°C) [
Ref.
]
mercury
: 0.0000019 (100°C) [
Ref.
]
mercury
: 0.0000054 (300°C) [
Ref.
]
potassium fused
: 0.0045 (700°C) [
Ref.
]
sodium fused
: 0.0005 (700°C) [
Ref.
]
tin liquid
: 0.0047 (270°C) [
Ref.
]
tin liquid
: 0.0073 (329°C) [
Ref.
]
tin liquid
: 0.07 (483°C) [
Ref.
]
tin liquid
: 1.26 (773°C) [
Ref.
]
tin liquid
: 12.49 (1125°C) [
Ref.
]
water
: insoluble [
Ref.
]
Numerical data:
Hardness on the Mohs’ scale: 4-5
Density:
7.874 (20°C, g/cm
3
)
6.9 (1589°C, d
4
)
Vapour pressure (Torr):
0.000000001 (799°C)
0.00000001 (858°C)
0.0000001 (924°C)
0.000001 (998°C)
0.00001 (1083°C)
0.0001 (1180°C)
0.001 (1293°C)
0.01 (1425°C)
0.1 (1586°C)
1 (1790°C)
10 (2045°C)
100 (2376°C)
Electrode potential:
Fe
2+
+ 2e
-
→ Fe, E = -0.44 V (water, 25°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)):
27.15 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
25 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
13.8
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
350
LD
50
(mg/kg):
98600 (rats, oral)
References:
Авцын А.П., Жаворонков А.А., Риш М.А., Строчкова Л.С. Микроэлементозы человека. - М.: Медицина, 1991. - pp. 92-116 [Russian]
Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 400-409 [Russian]
Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 50 [Russian]
Иванова М.А., Кононова М.А. Химический демонстрационный эксперимент. - М.: Высшая школа, 1969. - pp. 30 [Russian]
Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 325-334, 342 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 62 [Russian]
Реми Г. Курс неорганической химии. - Т.2. - М., 1966. - pp. 280-288 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 637 [Russian]
Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 139-141 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru