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Properties of substance:
3-aminopropanoic acid
Synonyms:
β-alanine
Group of substances:
organic
Empirical formula (Hill's system for organic substances):
C
3
H
7
NO
2
Structural formula as text:
H2NCH2CH2COOH
Molar/atomic mass: 89.093
Melting point (°C):
196
Decomposition temperature (°C):
200
Solubility (g/100 g of solvent):
acetone
: insoluble [
Ref.
]
chloroform
: insoluble [
Ref.
]
diethyl ether
: insoluble [
Ref.
]
ethanol
: 0.022 (25°C) [
Ref.
]
water
: 35.28 (25°C) [
Ref.
]
Density:
1.437 (19°C, g/cm
3
)
Reactions of synthesis:
Yeild 40-45%. [
Ref.1
]
(CH
2
CO)
2
NH + KBrO + H
2
O → NH
2
CH
2
CH
2
COOH + KBr + CO
2
Dissociation:
pK
a
(1) = 10.24 (25°C, water)
pK
a
(2) = 3.6 (25°C, water)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-558 (s)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-424 (g)
References:
CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-10
CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-24
Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 200
Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 70
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 408-409 [Russian]
Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 85 [Russian]
Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 81-82 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru