Definition

2-Hexanone (methyl butyl ketone, MBK) is a ketone used as a general solvent and in paints. It dissolves cellulose nitrate, vinyl polymers and copolymers, and natural and synthetic resins. It is recommended as a solvent because it is photochemically inactive;however it has a very low safe threshold limit value.
2-Hexanone is absorbed through the lungs, orally and dermally and its metabolite, 2,5-hexanedione, is neurotoxic.Animal tests have shown that the neurotoxic effect of 2-hexanone may be potentiated by simultaneous administration of 2-butanone (methyl ethyl ketone, MEK).

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Properties

    Physical Properties

  • METHYL BUTYL KETONE is a clear colorless liquid.
  • Flash point 95°F. Less dense than water.
  • Flash point 95°F. Less dense than water. Vapors heavier than air.
  • Liquid:COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.
  • Colorless liquid with an acetone-like odor.
  • Boiling point: 261° F at 760 mm Hg
  • Melting point: -71° F
  • Flash Point: 73° F
  • Sollubility :
    • 10 to 50 mg/mL at 72° F
    • 1.4 wt% in water at 20 deg C
    • Sol in acetone; miscible in ethanol and ether
  • In water, 1.72X10+4 mg/L at 20 deg C(17.5 mg/mL at 20 °C,in water, g/100ml at 20°C: 1.4)
  • Density: 0.812 at 68° F 0.830 at 20 deg C/20 deg C
  • Viscosity:0.62 cP at 20 deg C
  • Heat of Vaporization:36.05 kJ/mol
  • Surface Tension :25.4 dyn/cm at 20 deg C

Chemical Properties

  • Hexan-2-one is colourless liquid.
  • General Description : A clear colorless liquid. Flash point 95°F. Less dense than water. Vapors heavier than air.
  • Air and Water Reactions : Highly flammable. Slightly soluble in water.
  • Reactivity Profile : 2-Hexanone is incompatible with oxidizing agents. 2-Hexanone may also react with strong bases and reducing agents.
  • Health Hazard : Inhalation of high concentrations of vapor may result in narcosis; peripheral neuropathy may develop. Ingestion of large amounts may cause some systemic injury. Contact with eyes causes mild to moderate irritation. Liquid irritates skin; prolonged or repeated contact may cause defatting of the skin with resultant dermatitis.
  • Fire Hazard : 2-Hexanone is flammable.

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