| Physical state | colourless liquid |
|---|---|
| Colour | Colorless liquid |
| Odour | Acetone-like odor |
| Melting point/ freezing point | -87 °C |
| Boiling point or initial boiling point and boiling range | 80°C(lit.) |
| Flammability | Class IB Flammable Liquid: Fl.P. below 22.78°C and BP at or above 37.78°C.Highly flammable. |
| Lower and upper explosion limit / flammability limit | Lower flammable limit: 1.4% by volume @ 200 deg F (93°C); Upper flammable limit: 11.4% by volume @ 200 deg F (93°C) |
| Flash point | -3°C |
| Auto-ignition temperature | 515.56°C |
| Decomposition temperature | no data available |
| pH | no data available |
| Kinematic viscosity | 0.40 cP at 25°C |
| Solubility | In water:290 g/L (20 oC) |
| Partition coefficient n-octanol/water (log value) | log Kow = 0.29 |
| Vapour pressure | 71 mm Hg ( 20 °C) |
| Density and/or relative density | 0.805g/mLat 25°C(lit.) |
| Relative vapour density | 2.49 (vs air) |
| Particle characteristics | no data available |
no data available
Stability during transport: stable
Highly flammable liquid.The vapour is heavier than air and may travel along the ground; distant ignition possible.METHYL ETHYL KETONE is explosive in the form of vapor when exposed to heat, flame or sparks. Ignition on contact with potassium tert-butoxide. Reactive with strong oxidizing materials, and will dissolve or soften some plastics. Mixture with 2-propanol will form explosive peroxides during storage. Vigorous reaction with chloroform in the presence of alkali (sodium hydroxide, potassium hydroxide), chlorosulfonic acid, fuming sulfuric acid (oleum) [Lewis, 3rd ed., 1993, p. 855]. Reaction with hydrogen peroxide in the presence of nitric acid forms heat- and shock-sensitive explosive acetone peroxides. [Bjorklund, G. H. et al., Trans. R. Soc. Can, 1950, 44, p. 25].
no data available
Reacts violently with strong oxidants and inorganic acids causing fire and explosion hazard. Attacks some plastic.
MEK in air is rapidly decomposed by photochemical processes, mainly through oxidation by hydroxyl free radicals as well as some decomposition by direct photolysis ... /with a/ half-life of 5.4 hr for photochemical decomposition in urban atmospheres.
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