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- from http://en.wikipedia.org/wiki/Energy_density

Some definitions used

AVGAS 100LL = a high octane aviation gas (liquid fuel actually) Low Lead (2 grams of lead per US gallon)  with a density of 0.72 Kg / L

MOGAS = motor gasoline (petrol)

- from http://en.wikipedia.org/wiki/Energy_density

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The Physics Factbook™

Edited by Glenn Elert -- Written by his students, an educational, Fair Use website.

topic index | author index | special index

Methanol, also called carbinol, methyl alcohol, wood spirit, or wood alcohol, is a colorless, poisonous liquid with very little taste. Its lack of color is an important hazard and often the strong smell of wood alcohol or kerosene is added so that workers will become aware of leaks and spills. Methanol is miscible with water and most organic liquids, including gasoline. It is extremely flammable, burning with a nearly invisible blue flame. Methanol has become a major feedstock for the synthesis of acetic acid and large amounts of methanol are consumed in the production of methyl esters. Methanol itself is employed as an extractant and solvent for many substances, and is sometimes blended with gasoline in cold weather to reduce condensation problems. It was formerly obtained from wood as a co product of charcoal production.

Ever thought what would happen if you drank a dose of methanol? You probably think no one would do it but if it happened for prolonged periods, methanol can cause blindness or death. It can also be absorbed through the skin.

Methanol's chemical formula is CH₃OH. It has a molecular weight of 32.04 and boils at 64.7  °C and freezes at -97  °C. Energy density is measured by the amount of energy per mass. The standard unit for energy density is megajoules per kilogram (MJ/kg). The energy density for methanol is around 22  MJ/kg.

Jenny Hua -- 2005

- from http://hypertextbook.com/facts/2005/JennyHua.shtml

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The Physics Factbook™

Edited by Glenn Elert -- Written by his students, an educational, Fair Use website.

topic index | author index | special index

Energy density is the amount of energy stored in a given system or region of space per unit volume or mass. It therefore has units of energy per length cubed or energy per mass. Gasoline has an energy density of about 45 megajoules per kilogram (MJ/kg).

Gasoline is a mixture of the lighter liquid hydrocarbons used chiefly as a fuel for internal-combustion engines. It is produced by the incomplete refinement of petroleum by condensation or adsorption from natural gas by thermal or catalytic decomposition of petroleum or its fractions by the hydrogenation of producer gas or coal or by the polymerization of hydrocarbons of lower molecular weight.

Gasoline is one of the most important fuels used in the transportation industry. Most gasoline is used in engines that move automobiles and light trucks. Gasoline engines also power other vehicles and machines, including airplanes (aviation), motorboats, tractors, and lawn mowers.

Arthur Golnik -- 2003

- from http://hypertextbook.com/facts/2003/ArthurGolnik.shtml

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Among the polyalkylenes polybutylene, a copolymer formed by the polymerization of isobutylene and butene, is preferred. Typically polybutylenes will have an average molecular weight of from about 300 to about 2000 and a viscosity index of from about 70 to about 122 (ASTM D2270). Various grades, corresponding to different average molecular weights, are commercially available from Amoco Chemical Company (Chicago, Ill.) under the name Indopol.RTM.. Thus by way of example only, Indopol L-50.RTM. has an average molecular weight of 420 and a viscosity index of about 90 when measured by ASTM D2270 whereas Indopol H-100.RTM. has an average molecular weight of 920 and a viscosity index of about 109. Suitable polybutylenes include:

- from http://www.freepatentsonline.com/5525358.html

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