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Properties of substance:
uric acid
skc-file
Group of substances:
organic
Physical appearance:
colorless crystals
Empirical formula (Hill's system for organic substances):
C
5
H
4
N
4
O
3
Molar/atomic mass: 168.12
Decomposition temperature (°C):
400
Solubility (g/100 g of solvent):
diethyl ether
: slightly soluble [
Ref.
]
ethanol abs.
: 0.68 (20°C) [
Ref.
]
formic acid 95%
: 0.04 (20°C) [
Ref.
]
glycerol
: soluble [
Ref.
]
pyridine
: 0.21 (20°C) [
Ref.
]
quinoline
: 1.13 (20°C) [
Ref.
]
water
: 0.00313 (25°C) [
Ref.
]
water
: 0.00645 (37°C) [
Ref.
]
water
: 0.0834 (100°C) [
Ref.
]
Numerical data:
Year of discovery: 1776
Density:
1.893 (20°C, g/cm
3
)
Dissociation:
pK
a
(1) = 3.89 (25°C, water)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-618.8 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
173.2 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
166.1 (s)
References:
Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 282-286
The Merck Index 11th ed., Merck & Company, 1989. - pp. 1554
Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 138-139
Досон Р., Эллиот Д., Эллиот У., Джонс К. Справочник биохимика. - М.: Мир, 1991. - pp. 77 [Russian]
Краткая химическая энциклопедия. - Т. 3: Мальтаза-Пиролиз. - М.: Советская энциклопедия, 1964. - pp. 327-328 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 411 [Russian]
Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1110, 1364 [Russian]
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 800-801 [Russian]
Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 144 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru