| Physical Properties |  | 
      
        | Molecular 
        weight | 84.16 | 
      
        | Boiling point | 80.72°C | 
      
        | Vapor pressure | 77.5 Torr 
        at 20°C | 
      
        | Freezing point | 6.54°C | 
      
        | Refractive 
        index | 1.4262 at 
        20°C | 
      
        | Density | 0.7785 g/mL 
        (6.497 lb/gal) at 20°C | 
      
        |  | 0.7739 g/mL 
        (6.457 lb/gal) at 25°C | 
      
        | Dielectric 
        constant | 2.02 at 
        20°C | 
      
        | Dipole moment | 0 D at 
        20°C | 
      
        | Solvent group | 0 | 
      
        | Polarity index 
        (P') | 0.2 | 
      
        | Eluotropic 
        value on alumina | 0.04 | 
      
        | Viscosity | 1.0 cP at 
        20°C | 
      
        | Surface 
        tension | 24.98 dyn/cm 
        at 20°C | 
      
        | Solubility in 
        water | 0.006% at 
        25°C | 
      
        | Solubility of 
        water in cyclohexane | 0.01% at 
        20°C | 
      
        |  |  | 
      
        | Regulatory and Safety Data |  | 
      
        | DOT Hazard 
        Class | 3, 
        Flammable Liquid | 
      
        | Packing Group | II | 
      
        | UN 
        Identification Number | UN1145 | 
      
        |  |  | 
      
        | Storage | Store in 
        an area designed for flammable storage, or in an approved metal cabinet, 
        away from direct sunlight, heat and sources of ignition. | 
      
        |  |  | 
      
        | EPA applicable 
        waste code(s) | D001, U056 | 
      
        | Flash point | -4°F 
        (-20°C) by closed cup | 
      
        | Lower 
        explosive limit | 1.3% | 
      
        | Upper 
        explosive limit | 8.0% | 
      
        | Time Weighted 
        Average | 300 ppm 
        ACGIH |