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Properties of substance:
ammonium dihydrogen phosphate
Group of substances:
inorganic
Physical appearance:
colorless tetragonal crystals
Empirical formula (Hill's system for organic substances):
H
6
NO
4
P
Structural formula as text:
NH4H2PO4
Molar/atomic mass: 115.03
Melting point (°C):
190
Decomposition temperature (°C):
250
Solubility (g/100 g of solvent):
acetone
: insoluble [
Ref.
]
water
: 22.6 (0°C) [
Ref.
]
water
: 28 (10°C) [
Ref.
]
water
: 35.3 (20°C) [
Ref.
]
water
: 39.5 (25°C) [
Ref.
]
water
: 43.9 (30°C) [
Ref.
]
water
: 57 (40°C) [
Ref.
]
water
: 82.5 (60°C) [
Ref.
]
water
: 118.3 (80°C) [
Ref.
]
water
: 173.2 (100°C) [
Ref.
]
Properties of solutions:
28,4% (wt.), solvent - water
Density (g/cm
3
) = 1.16 (25°)
Density:
1.8 (20°C, g/cm
3
)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-1446 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-1211 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
152 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
142 (s)
References:
Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 3.15
Journal of Physical and Chemical Reference Data. - 1998. - Vol. 27, No. 6. - pp. 1289-1459
Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 240
Milne G.W.A. Gardner's Commercially Important Chemicals. - Wiley-Interscience, 2005. - pp. 35
Perry D.L. Handbook of Inorganic Compounds. - 2nd ed. - CRC Press, 2011. - pp. 21
Неорганическая химия. - Под ред. Третьякова Ю.Д., Т.2. - М.: Academa, 2004. - pp. 177 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 54 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 218 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
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