physical properties of pure methanol

Physical Properties of Pure Methanol Molecular Weight 32.04 g mol -1 Boiling Point Critical Temperature 512.5K 760 mm Hg (101.3 kPa) 64.6°C (239°C; 463°F) (148.3°F) Critical Pressure 8.084MPa Freezing Point -97.6°C (78.5 atm) (-143.7°F) Critical Density 0.2715 g cm -3 Reid Vapour Pressure 32 kPa Critical Compressibility 0.224 Flash Point Factor Closed vessel (TCC method) 12°C (54°F) Specific Gravity Open vessel (TOC method) 15.6°C (60.1°F) Liquid Auto Ignition Temperature 470°C (878°F) (25°/4 o C) 0.7866 Viscosity (20°/4 o C) 0.7915 Liquid (15°/4°C) 0.7960 -25°C (-13°F) 1.258 mPa s Vapour 1.11 0°C (32°F) 0.793 mPa s Vapour Pressure 25°C (77°F) 0.544 mPa s 20°C (68°F) 12.8 kPa Vapour (1.856 psia) 25°C (77°F) 9.68 μPa s (96 mm Hg) 127°C (261°F) 13.2 μPa s 25°C (77°F) 16.96 kPa Surface Tension (2.459 psia) 20°C (68°F) 22.6 mN m -1 (127.2 mm Hg) 25°C (77°F) 22.07 mN m -1 Latent Heat of Refractive Index Vapourization 15°C (59°F) 1.33066 25°C (77°F) 37.43 kJ mol -1 20°C (68°F) 1.32840 (279.0 cal g -1 ) 25°C (77°F) 1.32652 64.6°C (148.3°F) 35.21 kJ mol -1 Thermal Conductivity (262.5 cal g -1 ) Liquid Heat Capacity at Constant 0°C (32°F) 207 mW m -1 K -1 Pressure 25°C (77°F) 200. mW m -1 K -1 25°C (77°F) (101.3kPa) Vapour Liquid 81.08 J mol -1 K -1 100°C (212°F) 14.07 mW m -1 K -1 (0.604 cal g -1 K -1 ) 127°C (261°F) 26.2 mW m -1 K -1 (0.604 Btu lb -1 °F -1 ) Heat of Combustion Vapour 44.06 J mol -1 K -1 [1] Higher heating value (HHV) 726.1 kJ mol -1 (0.328 cal g -1 K -1 ) (25°C, 101.325kPa ) (22.7 kJ g -1 ) (0.328 Btu lb -1 °F -1 ) Lower heating value (LHV) 638.1 kJ mol -1 [calc] Coefficient of Cubic (25°C, 101.325kPa ) (19.9 kJ g -1 ) Thermal Expansion Flammable Limits (in air) Lower 6.0(v/v)% 20°C 0.00149 per °C Upper 36.5(v/v)% 40°C 0.00159 per °C A copy of the MSDS for methanol can be obtained from the Methanex Corporation web site: www.methanex.com/methanol/techsafetydata.htm

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Methanol physical properties

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Physical Properties of Pure Methanol Molecular Weight 32.04 g mol-1 Boiling Point Critical Temperature 512.5K 760 mm Hg (101.3 kPa) 64.6C (239C; 463F) (148.3F) Critical Pressure 8.084MPa Freezing Point -97.6C (78.5 atm) (-143.7F) Critical Density 0.2715 g cm-3 Reid Vapour Pressure 32 kPa Critical Compressibility 0.224 Flash Point Factor Closed vessel (TCC method) 12C (54F) Specific Gravity Open vessel (TOC method) 15.6C (60.1F) Liquid Auto Ignition Temperature 470C (878F) (25/4oC) 0.7866 Viscosity (20/4oC) 0.7915 Liquid (15/4C) 0.7960 -25C (-13F) 1.258 mPa s Vapour 1.11 0C (32F) 0.793 mPa s Vapour Pressure 25C (77F) 0.544 mPa s 20C (68F) 12.8 kPa Vapour (1.856 psia) 25C (77F) 9.68 mPa s (96 mm Hg) 127C (261F) 13.2 mPa s 25C (77F) 16.96 kPa Surface Tension (2.459 psia) 20C (68F) 22.6 mN m-1 (127.2 mm Hg) 25C (77F) 22.07 mN m-1 Latent Heat of Refractive Index Vapourization 15C (59F) 1.33066 25C (77F) 37.43 kJ mol-1 20C (68F) 1.32840 (279.0 cal g-1) 25C (77F) 1.32652 64.6C (148.3F) 35.21 kJ mol-1 Thermal Conductivity (262.5 cal g-1) Liquid Heat Capacity at Constant 0C (32F) 207 mW m-1 K-1 Pressure 25C (77F) 200. mW m-1 K-1 25C (77F) (101.3kPa) Vapour Liquid 81.08 J mol-1 K-1 100C (212F) 14.07 mW m-1 K-1 (0.604 cal g-1 K-1) 127C (261F) 26.2 mW m-1 K-1 (0.604 Btu lb-1 F-1) Heat of Combustion Vapour 44.06 J mol-1 K-1 [1] Higher heating value (HHV) 726.1 kJ mol-1 (0.328 cal g-1 K-1) (25C, 101.325kPa ) (22.7 kJ g-1) (0.328 Btu lb-1 F-1) Lower heating value (LHV) 638.1 kJ mol-1 [calc] Coefficient of Cubic (25C, 101.325kPa ) (19.9 kJ g-1) Thermal Expansion Flammable Limits (in air) Lower 6.0(v/v)% 20C 0.00149 per C Upper 36.5(v/v)% 40C 0.00159 per C

A copy of the MSDS for methanol can be obtained from the Methanex Corporation web site:

www.methanex.com/methanol/techsafetydata.htm