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Mineral oil: 1.0 [1] Flammable. Common type of transformer oil. n-Hexane: 1.1–1.3 [1] Flammable. Used in some capacitors. n-Heptane: Flammable. Castor oil natural ester 4.7: High dielectric constant. Flammable. Refined and dried castor oil is used in some high voltage capacitors. Hatcol 5005 synthetic ester [2] 3.2: High dielectric constant ...
Castor oil is a vegetable oil pressed from castor beans, the seeds of the plant Ricinus communis. [1] The seeds are 40 to 60 percent oil. [ 2 ] It is a colourless or pale yellow liquid with a distinct taste and odor.
Australia's first oil rig was erected there in 1866. [3] Between the 1920s and 1950s, the Shell Company of Australia and Vacuum Oil Company Australia Pty Ltd were selling petrol through single-brand service stations while Golden Fleece, Independent Oil Industry and Commonwealth Oil Refineries Ltd operated through multiple-brand stations. [4]
The structure below shows the major component of castor oil which is composed of the tri-ester of rincinoleic acid and glycerin: Major component of castor oil. Other vegetable oils - such as soy bean oil, [3] peanut oil, and canola oil - contain carbon-carbon double bonds, but no hydroxyl groups
Ricinus communis, the castor bean [1] or castor oil plant, [2] is a species of perennial flowering plant in the spurge family, Euphorbiaceae. It is the sole species in the monotypic genus , Ricinus , and subtribe , Ricininae .
First, plant material is extracted with a hydrocarbon solvent, such as hexane, to yield concrete. The concrete is then extracted with ethanol. The ethanol extract is cooled (e.g., to −15 °C) to solidify waxes, and cold filtered to yield a liquid extract. When the ethanol evaporates, an oil—the absolute—is left behind. [1]
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