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CASTOR OIL - PALE PRESSED; U.S.P.
FDA Registered, cGMP Proven Quality, All Natural
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GENERAL INFORMATION
The castor oil is native from Central Africa, it can be found as an ornamental plant, in all regions of
tropical and subtropical zone. Also cultivated for the production of industrial oils in several countries of
the world, especially in India and Brazil. It was used as a long-term medicinal plant during the past.
Castor Oil as an Industrial ingredient
The castor oil is today used in plastics, textiles, paints, cosmetics, and a number of inks and industrial
adhesives. Castor Oil is finding increasing uses in the industrial world. It figures largely in the
manufacture of the artificial leather used in upholstery; it furnishes a coloring for butter, and from it is
produced the so-called 'Turkey-red' oil used in the dyeing of cotton textures. It is an essential
component in some artificial rubbers, in various descriptions of celluloid, and in the making of certain
waterproof preparations, and one of the largest uses is in the manufacture of transparent soaps. It also furnishes sebacic acid which is employed in the manufacture of candles, and caprylic acid, which
enters into the composition of varnishes.
Castor oil for cosmetics, and medical use
The castor oil, when used in cosmetics, acts as a humectant; it attracts and retains moisture to the
skin. Castor oil is often used in lipsticks. It is also a thickener and an emollient. Castor Oil is regarded
as one of the most valuable laxatives in medicine. Externally, the oil has been recommended for various cutaneous complaints. Castor Oil is an excellent solvent of pure alkaloids and such solutions of
Atropine, Cocaine, etc., as are used in ophthalmic surgery. It is also dropped into the eye to remove the after-irritation caused by the removal of foreign bodies.
Castor Oil for Soap manufacturing
Castor Oil forms a clean, light-colored soap, which dries and hardens well and is free from smell.
GENERAL SPECIFICATIONS
Castor Oil is the fixed oil obtained from the seed of Ricinus communis Linné (Fam. Euphorbiaceae).
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TEST
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METHOD
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RANGE
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Specific gravity @ 25°C
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USP
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0.957-0.961
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Iodine value
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USP
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83 - 88
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Saponification value
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USP
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176 - 182
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Free fatty acids
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USP
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< 3.5 mL of 0.10 N NaOH
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Heavy metals, Method II
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USP
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0.001% max
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Hydroxyl value
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160 - 168
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Distinction from most other fixed oils
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USP
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passes
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Color Gardner
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AOCS Td la-64
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3 max
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Appearance
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Characteristically clear and free from suspended matter
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Odor
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Slight, characteristic
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TYPICAL FATTY ACID COMPOSITION (%)
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C16:0
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0.8 - 1.8
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C18:2
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3.5 - 6.8
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C18:0
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0.8 - 2.0
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Ricinoleic
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82 - 95
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C18:1
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3.0 - 6.0
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(Fatty acid composition is provided for informational purposes only and is not part of a standard batch analysis.)
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