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4-Chloropyridine-2-carboxylic acid
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Name

4-Chloropyridine-2-carboxylic acid

 EINECS -0
CAS No. 5470-22-4 Density 1.47 g/cm3
PSA 50.19000 LogP 1.43320
Solubility N/A Melting Point 181 °C
Formula C6H4ClNO2 Boiling Point 308 °C at 760 mmHg
Molecular Weight 157.556 Flash Point 140.1 °C
Transport Information N/A Appearance N/A
Safety 26-36/37/39 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 5470-22-4 (4-Chloropyridine-2-carboxylic acid) Hazard Symbols IrritantXi
Synonyms

Picolinicacid, 4-chloro- (6CI,7CI,8CI);4-Chloro-2-carboxypyridine;4-Chloropicolinicacid;NSC 26285;4-Chloropicolinic acid;

Article Data 32

4-Chloropyridine-2-carboxylic acid Synthetic route

24484-93-3

4-Chloro-pyridine-2-carboxylic acid methyl ester

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
With sodium hydroxide at 20℃; for 1h;87%
Stage #1: 4-Chloro-pyridine-2-carboxylic acid methyl ester With methanol; sodium hydroxide; water at 20℃; for 0.25h;
Stage #2: With hydrogenchloride; water pH=2;
Stage #1: 4-Chloro-pyridine-2-carboxylic acid methyl ester With methanol; sodium hydroxide; water at 0 - 20℃; for 0.25h;
Stage #2: With hydrogenchloride; water pH=2;
19235-89-3

4-chloro-pyridine-2-carbonitrile

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
With sodium carbonate; sodium sulfite In ice-water; sulfuric acid; water54.9%
98-98-6

2-Picolinic acid

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
Stage #1: 2-Picolinic acid With thionyl chloride; sodium bromide for 20h; Heating / reflux;
Stage #2: With water at -2 - 2℃;		28%
Multi-step reaction with 2 steps
1: 1) SOCl2, DMF / 1) 40-45 deg C, 45 min; 45->72 deg C, 2 h; 72 deg C, 21 h, 2) toluene, room temperature, 1 h
2: 1) 57percent HI, aq. hypophosphorous acid, 2) aq. NaOH / 1) 107 deg C, 6 h, 2) 95 deg C, 30 min; room temperature, 1 h
View Scheme
With thionyl chloride In N,N-dimethyl-formamide at 95℃; for 12h;
3678-63-5

4-chIoro-2-methylpyridine

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
With potassium permanganate
53750-66-6

4-chloro-pyridine-2-carbonyl chloride

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
With water
With water
1762-41-0

4,4'-dichloro-2,2'-bipyridine

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
With potassium permanganate; sulfuric acid; water
636-80-6

2-picolinic acid hydrochloride

5470-22-4

4-chloropicolinic acid

Conditions
ConditionsYield
With thionyl chloride; sulfur dioxide Behandeln des Reaktionsprodukts mit H2O;
With thionyl chloride In water at 0℃; Reflux;

methyl 4-chloropyridine-2-carboxylate hydrochloride

A

5470-22-4

4-chloropicolinic acid

B

4-iodopicolinic acid hemi-hydroiodide

Conditions
ConditionsYield
With sodium hydroxide; hydrogen iodide; hypophosphorous acid 1) 107 deg C, 6 h, 2) 95 deg C, 30 min; room temperature, 1 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;
98-98-6

2-Picolinic acid

7719-09-7

thionyl chloride

A

5470-22-4

4-chloropicolinic acid

B

88912-25-8

4,6-dichloro-2-pyridinecarboxylic acid

C

496849-77-5

4,5,6-trichloropicolinic acid

Conditions
ConditionsYield
Irradiation;
98-98-6

2-Picolinic acid

A

5470-22-4

4-chloropicolinic acid

B

4-chloro-6-oxy-picolinic acid

4-chloro-6-oxy-picolinic acid

Conditions
ConditionsYield
With phosphorus pentachloride at 250 - 270℃; im Rohr; Behandeln des Reaktionsprodukts mit Schwefelsaeure;

4-Chloropyridine-2-carboxylic acid Specification

The 4-Chloropyridine-2-carboxylic acid, with the cas register number 5470-22-4, is also known to us as iflab-bb f1926-0017; 4-chloropicolinic acid; 4-chloropyridine-2-carboxylic acid; 4-chloro-2-pyridinecarboxylic acid; chloropicolinicacid; 4-chloropyridine-2-carboxylic; 4-chloropicolinic acid 99%; 4-chloropicolinic acid ,98%.

The physical properties of this chemical are as followings: (1)ACD/LogP: 0.76; (2)ACD/BCF (pH 5.5): 1; (3)ACD/BCF (pH 7.4): 1; (4)ACD/KOC (pH 5.5): 1 ; (5)ACD/KOC (pH 7.4): 1; (6)#H bond acceptors: 3 ; (7)#H bond donors: 1; (8)#Freely Rotating Bonds: 1; (9)Polar Surface Area: 39.19 ; (10)Index of Refraction: 1.59; (11)Molar Refractivity: 36.16 cm3; (12)Molar Volume: 107.1 cm3; (13)Polarizability: 14.33× 10-24 cm3; (14)Surface Tension: 61 dyne/cm; (15)Density: 1.47 g/cm3; (16)Flash Point: 140.1 °C; (17)Enthalpy of Vaporization: 57.93 kJ/mol; (18)Boiling Point: 308 °C at 760 mmHg; (19)Vapour Pressure: 0.000303 mmHg at 25°C.

Being a kind of irritant chemical to eyes, respiratory system and skin, it may cause inflammation to the skin or other mucous membranes. So while dealing with this chemical, you'd better take the following instrction. Wear suitable protective clothing, gloves and eye/face protection, and if in case of contact with eyes, rinse immediately with plenty of water and seek medical advice. When store it, it should be kept in cool storeroom.

This kind of chemical is usually applied in BPC(bulk pharmaceutical chemicals). As to its product categories, there are various, including blocks; carboxes; pyridines; pyridine series; acids and derivatives; heterocycles; pharmacetical; carboxylic acids; pyridine; chloropyridines; halopyridines; carboxylic acids; While its raw materials are hydrochloric acid, acetic acid glacial, nitric acid, sodium carbonate, hydrogen peroxide, potassium permanganate, sulfuric acid, 2-picoline, 2-methyl-4-nitropyridine.

In addition, you could obtain the molecular structure by converting the following datas:
SMILES:Clc1ccnc(C(=O)O)c1
InChI:InChI=1/C6H4ClNO2/c7-4-1-2-8-5(3-4)6(9)10/h1-3H,(H,9,10)
InChIKey:NNMYRMGMVLMQAY-UHFFFAOYAQ

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