Molecular Structure of 4-Pyridinecarboxylic acid, 2,6-dichloro- (CAS NO.5398-44-7):

IUPAC Name: 2,6-dichloropyridine-4-carboxylic acid 
Empirical Formula: C₆H₃Cl₂NO₂
Molecular Weight: 191.9995
H bond acceptors: 3
H bond donors: 1
Freely Rotating Bonds: 1
Polar Surface Area: 50.19Ų
Index of Refraction: 1.606
Molar Refractivity: 41.064 cm³
Molar Volume: 119.088 cm³
Surface Tension: 62.834 dyne/cm
Density: 1.612 g/cm³
Flash Point: 218.593 °C
Enthalpy of Vaporization: 73.202 kJ/mol
Boiling Point: 437.832 °C at 760 mmHg
Vapour Pressure: 0 mmHg at 25°C
Melting point: 209-212 °C(lit.)
Water Solubility: insoluble
InChI
InChI=1/C6H3Cl2NO2/c7-4-1-3(6(10)11)2-5(8)9-4/h1-2H,(H,10,11)
Smiles
n1c(cc(cc1Cl)C(=O)O)Cl
Product Categories: pharmacetical; Carboxylic Acids; Pyridines; Pyridine; Chloropyridines; Halopyridines; Carboxylic Acids

 Hazard Codes: Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
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
Hazard Note: Irritant
HazardClass: Irritant

  4-Pyridinecarboxylic acid, 2,6-dichloro- , with CAS number of 5398-44-7, can be called 2,6-dichloroisonicotinic acid ; 2,6-Dichlorisonicotinsaure ; Acide 2,6-dichloroisonicotinique ; Acide 2,6-dichloropyridine-4-carboxylique ; 2,6-Dichloro-4-pyridinecarboxylic acid ; 2,6-Dichloropyridine-4-Carboxylic Acid . It is an off-white to beige or light brownish powder.