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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.
Castor oil, the expressed natural fatty oil of the seeds of Ricinus communis also contains mixtures of the glycerides of isoricinoleic acids and much smaller traces of tristearin and the glyceride of dihydroxysteric acid. Ricinolein is the active principle in the use of castor oil as a purgative and solvent for several medically useful alkaloids.
Ricinoleic acid, formally called 12-hydroxy-9-cis-octadecenoic acid, is a fatty acid.It is an unsaturated omega-9 fatty acid [1] and a hydroxy acid.It is a major component of the seed oil obtained from the seeds of castor plant (Ricinus communis L., Euphorbiaceae), the plant that produces ricin.
Castor oil by itself has been used in making a variety of polyurethane products, ranging from coatings to foams, and the use of castor oil derivatives continues to be an area of active development. Castor oil derivatized with propylene oxide [9] makes polyurethane foam for mattresses and yet another new derivative is used in coatings [10]
Although castor oil has anti-inflammatory and antioxidant properties, it can’t reach your organs, even through navel pulling—so any potential benefits would be from topical use, says Dr. Bechtold.
Castor oil’s moisturizing properties make it a common ingredient in over-the-counter eye drops. However, those products are specifically formulated and tested to treat eye dryness, doctors say.
This process converts ricinoleate moieties in castor oil triglycerides to 12-hydroxystearate, with stearate as a byproduct from dehydration of the hydroxy acid followed by hydrogenation. Lithium soaps manufactured from hydrogenated castor oil typically contain a mixture of lithium 12-hydroxystearate and lithium stearate .
Properties 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 ...