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2402-77-9

Basic Information
CAS No.: 2402-77-9
Name: 2,3-Dichloropyridine
Article Data: 55
Cas Database
Molecular Structure:
Molecular Structure of 2402-77-9 (2,3-Dichloropyridine)
Formula: C5H3Cl2N
Molecular Weight: 147.992
Synonyms: Pyridine, 2,3-dichloro-;2,3-Dichloro-pyridine;
EINECS: 219-281-8
Density: 1.388 g/cm3
Melting Point: 64-67 °C(lit.)
Boiling Point: 192.5 °C at 760 mmHg
Flash Point: 87.5 °C
Solubility: slightly soluble in water
Appearance: White to slightly beige crystalline powder
Hazard Symbols: HarmfulXn,IrritantXi
Risk Codes: 36/37/38-22
Safety: 26-36-37/39
Transport Information: N/A
PSA: 12.89000
LogP: 2.38840
Synthetic route
14121-36-9

2,3,4,6-Tetrachloropyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With hydrogen; triethylamine; urea; citric acid In ethyl acetate at 50℃; under 7500.75 Torr; for 7h; Solvent; Temperature; Pressure; Reagent/catalyst; Autoclave;98.1%
6515-09-9

2,3,6-trichloropyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With carbonylhydridetris(triphenylphosphine)rhodium(I); hydrogen; triethylamine In methanol at 60℃; under 450045 Torr; Temperature; Solvent; Pressure; Autoclave;98%
With methanol; palladium 10% on activated carbon; 3-p-menthene at 60℃; for 4h; Temperature; Reagent/catalyst;95%
With hydrogen In methanol at 75℃; under 750.075 Torr; for 8h; Reagent/catalyst; Autoclave;95.3%
2402-78-0

2,6-dichloropyridine

A

2402-77-9

2,3-dichloro-pyridine

B

1513-65-1

2,6-difluoro pyridine

Conditions
ConditionsYield
In dimethyl sulfoxideA 96.3%
B n/a
6298-19-7

2-chloro-3-aminopyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
Stage #1: 2-chloro-3-aminopyridine With hydrogenchloride; sodium nitrite In water at 5 - 15℃; for 0.75h;
Stage #2: With hydrogenchloride; aminosulfonic acid; copper(II) chloride dihydrate In water at 55 - 62℃; Product distribution / selectivity;
95%
With hydrogenchloride; thionyl chloride; nitric acid In water at 0 - 5℃;91%
With hydrogenchloride; sodium nitrite In water at -5 - 40℃; for 1h; Sandmeyer Reaction; Cooling with ice; Inert atmosphere;83%
13466-35-8

2-hydroxy-3-chloropyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With phosphorus pentachloride In 1,2-dichloro-ethane at 60 - 65℃; for 10h; Reagent/catalyst; Temperature; Solvent;94.9%
With phosphorus pentachloride In 1,2-dichloro-ethane at 60 - 65℃; for 10h; Reagent/catalyst; Temperature;94.9%
With trichlorophosphate In 1,2-dichloro-ethane; N,N-dimethyl-formamide Reflux;43g
452-58-4

2,3-Diaminopyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With hydrogenchloride; copper dichloride; sodium nitrite In water at 20 - 45℃; for 5h; Reagent/catalyst; Large scale;89.5%
6636-78-8

2-chloro-3-hydroxypyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With trichlorophosphate In N,N-dimethyl-formamide at 0 - 30℃; for 9h; Reagent/catalyst;88%
With chlorine In dichloromethane at 35 - 40℃; for 4h; Solvent; Temperature;126 g
With sulfolane; phosphorus pentachloride; trichlorophosphate at 150℃; for 6h; Reagent/catalyst;
628-13-7

pyridine hydrochloride

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With pyridine; hydrogen In water at 40 - 60℃; under 2250.23 - 3750.38 Torr; Reagent/catalyst; Temperature; Pressure; Large scale;86.6%
With pyridine; hydrogen In water at 40 - 60℃; under 2250.23 - 3750.38 Torr; Temperature; Pressure; Reagent/catalyst; Large scale;86.6%
5470-18-8

2-Chloro-3-nitropyridine

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
With Dichlorophenylphosphine In various solvent(s) at 170℃; for 5h;81%
With sulfolane; phosphorus pentachloride; trichlorophosphate at 150℃; for 6h; Reagent/catalyst;

3-chloro-2-pyridinesulfonic acid

2402-77-9

2,3-dichloro-pyridine

Conditions
ConditionsYield
Stage #1: 3-chloro-2-pyridinesulfonic acid With hydrogenchloride; water In water at 103℃; for 5h;
Stage #2: With sodium chlorate for 5h; Temperature; Reflux;
80.3%
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Chemistry

Molecular Structure of 2,3-Dichloropyridine (CAS NO.2402-77-9):

IUPAC Name: 2,3-Dichloropyridine
Canonical SMILES: C1=CC(=C(N=C1)Cl)Cl
InChI: InChI=1S/C5H3Cl2N/c6-4-2-1-3-8-5(4)7/h1-3H
InChIKey: MAKFMOSBBNKPMS-UHFFFAOYSA-N
Molecular Weight: 147.99002 [g/mol]
Molecular Formula: C5H3Cl2N
XLogP3: 2.1
H-Bond Donor: 0
H-Bond Acceptor: 1
EINECS: 219-281-8 
Index of Refraction: 1.553
Molar Refractivity: 34.13 cm3
Molar Volume: 106.5 cm3
Surface Tension: 43.1 dyne/cm
Density: 1.388 g/cm3
Flash Point: 87.5 °C
Enthalpy of Vaporization: 41.11 kJ/mol
Boiling Point: 192.5 °C at 760 mmHg
Vapour Pressure: 0.679 mmHg at 25 °C
Appearance: White to slightly beige crystalline powder
Melting Point: 64-67 °C(lit.)
Water Solubility: slightly soluble
Product Categories: blocks; Pyridines; Pyridine; Halides; Heterocycles; Pyridines, Pyrimidines, Purines and Pteredines; Pyridine series; Pyridines derivates; Chloropyridines; Halopyridines; Boronic Acid; C5Heterocyclic Building Blocks; Halogenated Heterocycles; Heterocyclic Building Blocks; Chlorinated heterocyclic series

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 135mg/kg (135mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: ANTIPSYCHOTIC

LIVER: FATTY LIVER DEGERATION
Toxicology and Applied Pharmacology. Vol. 11, Pg. 361, 1967.

Safety Profile

Safety Information of 2,3-Dichloropyridine (CAS NO.2402-77-9):
Hazard Codes: IrritantXi,HarmfulXn
Risk Statements: 36/37/38-22 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R22:Harmful if swallowed.
Safety Statements: 26-36-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
RTECS: US8050000
Hazard Note: Irritant
HazardClass: IRRITANT

Specification

 2,3-Dichloropyridine (CAS NO.2402-77-9), its Synonyms are Pyridine, 2,3-dichloro- ; 2,3-Dichlopyridine ; 2,3-Dichloro-pyridine .

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