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Properties of substance:
picolinic acid
Synonyms:
2-pyridinecarboxylic acid
Group of substances:
organic
Physical appearance:
needles crystals
Empirical formula (Hill's system for organic substances):
C
6
H
5
NO
2
Structural formula as text:
C5H4NCOOH
Molar/atomic mass: 123.10995
Melting point (°C):
137
Solubility (g/100 g of solvent):
benzene
: difficulty soluble [
Ref.
]
carbon disulphide
: insoluble [
Ref.
]
chloroform
: difficulty soluble [
Ref.
]
diethyl ether
: difficulty soluble [
Ref.
]
ethanol
: 6.89 (25°C) [
Ref.
]
water
: very soluble [
Ref.
]
Reactions:
Yeild 54%. [
Ref.1
]
C
5
H
4
NCOOH + C
6
H
5
CHO → C
5
H
4
NCH(OH)C
6
H
5
+ CO
2
Yeild 48%. [
Ref.1
]
C
5
H
4
NCOOH + C
6
H
5
COC
6
H
5
→ C
5
H
4
NC(OH)(C
6
H
5
)
2
+ CO
2
Dissociation:
pK
a
(1) = 5.32 (25°C, water)
References:
CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-474
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 876-877 [Russian]
Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 92 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
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