Name Liquefied Natural Gas (LNG) Name Liquefied natural gas CAS number 95046-41-6 EC number 305-828-9 Information on basic physical and chemical properties a) appearance liquid, colourless b) odour odourless c) odour threshold not applicable d) pH - e) melting/freezing point -187 C to -182 C; f) boiling point / boiling range -162 C for methane g) flash point -58 C for methane h) evaporation rate not available i) combustibility (of a solid, gas) extremely flammable j) upper/lower flammability limit or upper/lower explosion limit lower limit 4.4 - 5.35% vol for methane upper limit 14.85 -15% vol for methane k) vapour pressure - l) vapour density 0.727 1.082 kg/m3 (normal conditions) m) relative vapour density 1.5 at -162 C 1.0 at -112 C 0.55 at 21 C n) solubility description - virtually insoluble in water, - soluble in organic solvents (e.g. benzene, carbon tetrachloride