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Properties of substance:
sodium sulfate
skc-file
Synonyms:
sodium sulphate
Group of substances:
inorganic
Physical appearance:
colorless rhombic crystals
Empirical formula (Hill's system for organic substances):
Na
2
O
4
S
Structural formula as text:
Na2SO4
Molar/atomic mass: 142.04
Melting point (°C):
884
Solubility (g/100 g of solvent):
1-butanol
: insoluble [
Ref.
]
1-propanol
: insoluble [
Ref.
]
2-propanol
: 0.00209 (20°C) [
Ref.
]
2-propanol
: 0.00222 (30°C) [
Ref.
]
2-propanol
: 0.00219 (40°C) [
Ref.
]
2-propanol
: 0.00175 (50°C) [
Ref.
]
acetic acid
: sparingly soluble [
Ref.
]
acetone
: insoluble [
Ref.
]
ammonia liquid
: insoluble [
Ref.
]
benzonitrile
: insoluble [
Ref.
]
deuterium oxide
: 42.9 (40°C) [
Ref.
]
deuterium oxide
: 37.4 (100°C) [
Ref.
]
ethanol
: 0.44 (20°C) [
Ref.
]
ethanol
: 0.48 (40°C) [
Ref.
]
ethyl acetate
: insoluble [
Ref.
]
formic acid 95%
: 16.5 (19°C) [
Ref.
]
glycerol
: soluble [
Ref.
]
hydrazine
: insoluble [
Ref.
]
hydrogen fluoride
: soluble [
Ref.
]
hydrogen peroxide
: 26.7 (0°C) [
Ref.
]
i-butanol
: insoluble [
Ref.
]
methanol
: 0.01 (10°C) [
Ref.
]
methanol
: 0.017 (20°C) [
Ref.
]
methanol
: 0.018 (30°C) [
Ref.
]
methanol
: 0.02 (40°C) [
Ref.
]
methanol
: 0.019 (50°C) [
Ref.
]
methanol 50%
: 0.46 (10°C) [
Ref.
]
methanol 50%
: 0.94 (20°C) [
Ref.
]
methanol 50%
: 1.02 (30°C) [
Ref.
]
methanol 50%
: 2.35 (40°C) [
Ref.
]
methanol 50%
: 2.26 (50°C) [
Ref.
]
methyl acetate
: insoluble [
Ref.
]
sulfur dioxide
: insoluble [
Ref.
]
sulfuric acid
: 16.3 (20°C) [
Ref.
]
water
: 4.5 (0°C) [
Ref.
]
water
: 9.6 (10°C) [
Ref.
]
water
: 19.2 (20°C) [
Ref.
]
water
: 27.9 (25°C) [
Ref.
]
water
: 40.8 (30°C) [
Ref.
]
water
: 49.8 (32°C) [
Ref.
]
water
: 49.8 (38°C) [
Ref.
]
water
: 48.4 (40°C) [
Ref.
]
water
: 45.3 (60°C) [
Ref.
]
water
: 43.3 (80°C) [
Ref.
]
water
: 42.3 (100°C) [
Ref.
]
Properties of solutions:
10% (wt.), solvent - water
Dynamic viscosity (mPa·s) = 1.39 (20°)
Density (g/cm
3
) = 1.0905 (20°)
Index of refraction = 1.3479 (20°)
0,017% (wt.), solvent - methanol
Density (g/cm
3
) = 0.81 (20°)
Density:
2.7 (20°C, g/cm
3
)
Reactions:
[
Ref.1
]
Na
2
SO
4
+ 2F
2
→ 2NaF + SO
2
F
2
+ O
2
[
Ref.1
]
Na
2
SO
4
+ 3S
2
Cl
2
→ 2SO
2
Cl
2
+ 2NaCl + 5S
Surface tension (mN/m):
195 (900°C)
190 (950°C)
188 (1000°C)
185 (1080°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-1384.6 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-1266.8 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
149.5 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
127.3 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
24.3
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-1070 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
345 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
105 (g)
References:
Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 1016-1024
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1300-1315
Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 166-167 [Russian]
Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 204 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 85 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 670 [Russian]
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 142-143 [Russian]
Справочник экспериментальных данных по растворимости солевых систем. - Т. 3. - Л.: ГНТИХЛ, 1961. - pp. 1606-1644 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru