(2-Butanone Ethyl methyl ketone MEK Butanone EK 500 Additive ) Formula: C₄H₈O M.W.: M.W. 72.11 g/mol Boiling Pt: 79.6°C (1013 hPa) Melting Pt: -86°C Density: 0.8054 g/cm³ (20°C) Flash Pt: -4°C CAS: 78-93-3 …