Absolute viscosity of liquid phase methane at different temperatures and pressures Junjie Chen Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com Methane, is a colourless, odourless gas that occurs abundantly in nature. Methane is the simplest member of the paraffin series of hydrocarbons and is among the most potent of the greenhouse gases. Methane is lighter than air, having a specific gravity of 0.554. It is only slightly soluble in water. It burns readily in air, forming carbon dioxide and water vapour; the flame is pale, slightly luminous, and very hot. Methane in general is very stable, but mixtures of methane and air, with the methane content between 5 and 14 percent by volume, are explosive. Explosions of such mixtures have been frequent in coal mines and collieries and have been the cause of many mine disasters. Methane is an important source of hydrogen and some organic chemicals. Temperature (degrees kelvin), Temperature (degrees Celsius), Temperature (degrees Fahrenheit), Pressure (bars), Pressure (pound-force per square inch), Absolute viscosity (micro-pascals-seconds), Absolute viscosity (centipoises) 90.694 -182.46 -296.42 0.1170 1.696 204.5 0.2045 100 -173 -280 0.3438 4.986 155.8 0.1558 110 -163 -262 0.8813 12.78 121.3 0.1213 120 -153 -244 1.914 27.76 97.43 0.09743 130 -143 -226 3.673 53.28 79.87 0.07987 140 -133 -208 6.412 93.00 66.33 0.06633 150 -123 -190 10.40 150.8 55.44 0.05544 160 -113 -172 15.92 230.9 46.27 0.04627 170 -103 -154 23.28 337.7 38.12 0.03812 Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China

Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China