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Properties of substance:
boron carbide
Group of substances:
inorganic
Physical appearance:
black trigonal crystals
Empirical formula (Hill's system for organic substances):
CB
4
Structural formula as text:
B4C
Molar/atomic mass: 55.25
Melting point (°C):
2350
Solubility (g/100 g of solvent):
water
: insoluble [
Ref.
]
Numerical data:
Vickers hardness (GPa): 38
Thermal conductivity (W/m·K): 13
Thermal conductivity (W/m·K): 28
Density:
2.52 (20°C, g/cm
3
)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-39 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
27.1 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
52.8 (s)
References:
CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-53
Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 145 [Russian]
Косолапова Т.Я. Карбиды. - М.: Металлургия, 1968. - pp. 188-192, 252-256 [Russian]
Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 14 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 56 [Russian]
Физические величины. - Под ред. Григорьева И.С., Мейлихова Е.З. - М.: Энергоатомиздат, 1991. - pp. 358 [Russian]
Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 300 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru