| Abstract
| - Biodiesel is produced in the United States to D 6751, an ASTM standard. The source material in this fledglingindustry in the U.S. is primarily soy oil, though other sources such as canola oil, waste oils, and greases fromfood and other sources are beginning to be exploited. At present, the referenced ASTM standard does notspecify cloud and pour points values that are much higher for biodiesel than diesel derived from petroleumbut allows them to be specified by the customer. There can be significant variation in these values, dependingon the nature of the source material used to produce biodiesel, all of which meet the ASTM standards. Thishas the potential to create problems in applications as the quality of the biodiesel produced could vary widely.This study focused on quantitative measurements of cloud points of blends of biodiesel made from differentsources. A correlation of these measurements with the saturated components was developed and was shownto correlate data reported in the literature as well.
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