Pharmaceutical Castor Oil (IP / BP / USP Grade)

Pharmaceutical Castor Oil contains high levels of ricinoleic acid (up to 90%), along with oleic, linoleic, and stearic acids, making it a pure, refined, and biocompatible oil used as a solvent, emulsifier, and vehicle for drugs due to its unique fatty acid profile, anti-inflammatory, and antimicrobial properties, meeting USP/BP standards for use in capsules, ointments, and even injections. 

Key Components:

  • Ricinoleic Acid: The primary fatty acid (around 90%) responsible for its unique properties, polarity, and therapeutic effects.
  • Other Fatty Acids: Contains smaller amounts of oleic acid, linoleic acid, stearic acid, and palmitic acid.
  • Triglycerides: The oil is a mixture of triglycerides, predominantly of ricinoleic acid. 

Pharmaceutical Grades & Purity:

  • Refined & Purified: Processed to remove impurities, meeting stringent pharmacopoeia standards (USP/BP/EP) for safety.
  • Hexane-Free: Often cold-pressed and free from hexane, ensuring higher quality. 

Pharmaceutical Uses:

Anti-inflammatory: Its ricinoleic acid content provides anti-inflammatory and antimicrobial benefits. 

Laxative: Stimulates intestinal muscles for temporary constipation relief.

Drug Delivery: Acts as a solubilizer and emulsifier for water-insoluble drugs, used in capsules, ointments, and emulsions.

Excipient: Functions as a lubricant, plasticizer, and carrier in various formulations, including IVs and eye drops.

AppearanceBrilliantly Clear & Free from suspended matter
Acid Value1.8 Max.
Iodine Value82-90
Saponification Value176 – 187
Unsaponifiable Matter0.8 % max w/w
Hydroxyl Value150 Min.
Peroxide Value4 Max.
Moisture0.25 % Max.
Foreign Fatty SubstancesComplies with tests
Relative Density @ 20° C0.952 – 0.965
Refractive Index @ 20° C1.4770 – 1.4810
Optical Rotation+3.5 ° – + 6.0 °
Colour on 5.25” lovibond scale20.0Y + 2.0 R Max.
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