This 4 x 1-gallon container of acetone by KMG Electronic Chemicals® is of megabit grade. It appears as a colorless liquid with an acetone odor. Manufactured to parts-per-billion trace impurities. Due to Federal regulations, this item is not returnable. Material: Acetone. Grade: Megabit. Appearance: Colorless Liquid. Odor: Acetone. Melting Point: -137.6°F (-94.2°C). Boiling Point: 133.1°F (56.17°C). Flash Point: -0.6°F (-18.1°C). Vapor Pressure: 196.47mm Hg. Vapor Density: 2 (Air = 1). Specific Gravity: 0.791 (Water = 1). Solubility: Completely Soluble In Water. Auto-ignition Temperature: 867.2°F (464°C). Molecular Weight: 58.08g/mole. Molecular Formula: C3H6O. Quantity: 4 x 1-Gallon. KMG Electronic Chemicals® #: 402-200400.