Molecular weight44.10Flame Temperature(In Oxygen) -H5110Flame Temperature(In Air) -H3600Flame Speed(In Oxygen) -Ft.Sec10.9Flame Speed(In Air) -Ft.Sec1.7Primary Flame Heat Value -BTUcu.ft.255Secondary Flame Heat Value CBTUcu.ft.2243Total Heat Value -BTUcu.ft.2498Total Heat Value of Gas -BTUcu.ft.21, 800Volume to weight ratio Ft3Ib @ 60H8.7Combustion Intensity Primary flame CBtuft2 sec433Combustion Intensity Secondary flame CBtuft2 sec3813Combustion Intensity CBtuft2 sec 4246 Quality standard :Purity%99.95Moisture, PPm0.001Acidity, PPm0.0001Residue on evaporation , PPm0.01Appearancecolorless , no cloudyOdorno smell