Physical Properties of Methacrylonitrile

Molecular structure CH3 | H2C C CN Molecular weight 67.09 Appearance Clear, colorless liquid Specific gravity 0.8001 at 20°C 0.7896 at 30°C Boiling point 90.3°C Melting point -35.8°C Viscosity 0.392mPas Refractive index (nD20) (nD30) 1.4007   1.3954   Surface tension 24.4mN/m at 20°C Specific Heat Liquid Vapor 1.80kJ/kg°C at 20°C 103.77kJ/kg°C at 100°C Heat of vaporization 31.8kJ/mol Heat of combustion 2330kJ/mol Heat of formation (liquid) 150.7kJ/mol Heat of polymerization 56.5kJ/mol Explosive limit 2.111.6 vol % in air Flash point (closed-cup) 1.1°C