Synonyms: Ethyl methyl ketone; MEK; Methyl ethyl ketone Formula: C2H5COCH3 Formula Weight: 72.11 CAS No.: 78-93-3 Purity: ≥99.0% Density: 0.805 g/mL at 25 °C(lit.) Supplemental Hazard Statements: Repeated exposure may cause skin dryness or cracking. Packaging: 1, 4, 4 x 4 L in aluminum bottle