Method for measuring the oxidative stability of fatty acid methyl esters in which the highly volatile organic acids produced absorbed in water and used to indicate induction time
The manufacture and use of fatty acid methyl esters (Fame) has huge implications for the environment.
Biodiesel is the name of a clean burning alternative fuel, produced from domestic, renewable resources.
Biodiesel contains no petroleum, but it can be blended at any level with petroleum diesel to create a biodiesel blend. It can be used in compression-ignition (diesel) engines with little or no modifications.
Biodiesel is simple to use, biodegradable, nontoxic, and essentially free of sulphur and aromatics.
Biodiesel is made through a chemical process called transesterification whereby the glycerin is separated from the fat or vegetable oil.
The process leaves behind two products - methyl esters (the chemical name for biodiesel) and glycerin (a valuable byproduct usually sold to be used in soaps and other products).
Fuel-grade biodiesel must be produced to strict industry specifications (ASTM D6751) in order to insure proper performance.
Biodiesel is the only alternative fuel to have fully completed the health effects testing requirements of the 1990 Clean Air Act Amendments.
Biodiesel that meets ASTM D6751 and is legally registered with the Environmental Protection Agency is a legal motor fuel for sale and distribution.
The Metrohm Rancimat 743 method for measuring the oxidative stability of fatty acid methyl esters is determined according to DIN EN 14112.
In this method the highly volatile organic acids produced by autoxidation are absorbed in water and used to indicate induction time.
With the simple to use 743 Rancimat, the determination takes place at a highly sophisticated level.
Eight measuring positions in two independent heating blocks.
Individual start on each position. Comprehensive control by PC.
Up to four Rancimat measuring blocks per PC - and therefore up to 32 samples at up to eight different temperatures.
Integrated GLP test.
Optimal automatic evaluation with additional, computer supported manual evaluation using the tangent method.
Conversion of the induction times to other temperatures, and extrapolation possible.
