castor oil

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castor oil,

yellowish oil obtained from the seed of the castor beancastor bean,
bean produced by Ricinus communis, a plant of the spurge family, widely cultivated as an ornamental. Moles die when they eat the roots. It has long been used as an ordeal poison in parts of Africa.
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. The oil content of the seeds varies from about 20% to 50%. After the hulls are removed the seeds are cold-pressed. Medicinal castor oil is prepared from the yield of the first pressing; this is used as a purgative and laxative. Oil from the second pressing is used as a lubricant for machinery, as a softening agent in making artificial leather, in the dressing of genuine leather, in brake fluids, and in paints and plastic materials. The residue can be used as fertilizer and (after the poisonous substance, ricin, is removed) as cattle feed. Other products having similar properties and uses have been gradually replacing castor oil.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Castor Oil


a fatty vegetable oil obtained from the seeds of the castor-oil plant. It is one of the nondrying liquid oils; it contains 3–9 percent oleic acid, 3–5 percent linoleic acid, and at least 80 percent ricinoleic acid. The high content of the ricinoleic acid is responsible for the properties of castor oil: high kinematic viscosity (more than X 10 -6 m2/sec at 50°C) and density (950–974 kg/m3 at 15°C). Unlike other fatty vegetable oils, it is readily soluble in alcohol but poorly soluble in benzine.

Castor oil is widely known for its medicinal properties. The ancient Egyptians used it to make all kinds of ointments and balms. It is best known for its use as a laxative. Combined with quinine, Pituitrin, pachycarpinum, and other substances, it is used to induce labor. Ointments and balms containing castor oil are used in the treatment of burns and ulcers, softening of the skin, and so forth. Castor oil has also found application in some branches of industry—for example, soap manufacture and oil boiling. Castor oil is a high-grade lubricant.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

castor oil

[′kas·tər ¦ȯil]
A colorless or greenish nondrying oil extracted from the castor bean; used as a cathartic, in soap, and after processing as a lubricant, and as a leather preservative. Also known as ricinus oil.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

castor oil

a colourless or yellow glutinous oil obtained from the seeds of the castor-oil plant and used as a fine lubricant and as a cathartic
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
For a better understanding of the Castor Oil and Derivatives market, a better grip over the macroeconomic and microeconomic factors are needed as they are impacting the market towards progress.
This finding was related to the study conducted by Ferdous et al., who also got 98.0% Biodiesel from Sesame oil with 1% NaOH as lye (Ferdous et al., 2013) By comparing the Biodiesel production, the highest yield of 98.78% was reported both in case of Waste Cooking oil and Sesame oil followed by 82.19% from Castor oil. Arjun et al.
Once you are sure it's in the stomach, use a big syringe to force down the castor oil. Shake up four to six ounces of oil with an equal amount of very warm water (in a small jar) and suck the mixture up into your syringe.
Recorded data of organic amendments including cow dung, horse manure, pigeon manure, castor oil cakes, duck manure and saw dust were analyzed in both Abbottabad and Mansehra on walnut trees.
* the absence of a label warning about hypersensitivity reactions associated with the PEG 40 castor oil;
Modulus of elasticity values of 328.265MPa and 1354.284MPa have been described following axial compression of both, porous and compact castor oil based polyurethane (with and without bubbles respectively).
BB Jamaican Black Castor Oil is a powerful oil-infused product for hair and skin.
Summary: Market leader in castor oil, Ihsedu Agrochem is not resting on its laurels.
WHEN THE MOTHER'S LABOR SLOWED at a birthing center, she received several medications including castor oil, blue cohosh, and black cohosh to induce labor.
1 castor oil, USP castor oil, and pale pressed castor oil with 98% biobased content;