Density 1.0± 0.1g /cm3 Boiling point 115.3±0.0 °C at 760 mmHg Melting point -42 °C Molecular formula C5H5N Molecular weight 79.100 Flash point 20.0±0.0 °C Accurate mass 79.042198 PSA 12.89000 LogP is 0.73 Appearance A clear and clean liquid with a characteristic odor Vapor density 2.72 (vs air) Vapor pressure 22.8±0.2 mmHg at 25°C Refractive index 1.501 Storage condition 1. Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the reservoir should not exceed 30. 2. It should be stored separately from oxidants, acids and edible chemicals, and should not be mixed. Explosion-proof lighting and ventilation facilities are adopted. 3. Do not use mechanical equipment and tools that are easy to produce sparks. 4. The storage area should be equipped with leak emergency treatment equipment and appropriate containment materials. Water soluble Miscible Freezing point -42 Molecular structure 1, molar refractive index: 24.34 2, molar volume (cm3/mol) : 82.6 3. Isotropic specific volume (90.2K) : 201.4 4, surface tension (dyne/cm) : 35.2 5. Polarizability (10-24cm3) : 9.65