6-Methyl-2-pyridinecarboxaldehyde Chemical Properties Melting point 31-33 °C(lit.) Boiling point 105-108°C/12mm density 1.1344 (rough estimate) refractive index n20/D 1.527(lit.) Fp 155 °F storage temp. 0-6°C form Low Melting Solid color Light yellow to brown