100% USP Grade Pure Castor Oil

Product Overview

100% USP Grade Pure Castor Oil is a highly refined triglyceride oil derived from the seeds of Ricinus communis. This USP-grade product is refined to meet stringent purity specifications, ensuring consistent performance in pharmaceutical manufacturing, cosmetic formulations, and demanding industrial applications. Distinguished by its high viscosity and unique fatty acid profile—dominated by ricinoleic acid—this oil provides exceptional lubricity, rheological control, and emollient properties.

The material appears as a clear to pale yellow liquid with a mild odor. It is strictly controlled for batch-to-batch consistency, verified by a Certificate of Analysis (COA) aligned with USP-NF Monograph requirements. Its insolubility in water and solubility in alcohols make it a critical component in urethane coatings, lubricant formulations, and surfactant systems. Alliance Chemical maintains this product under controlled storage conditions to preserve stability for both laboratory development and full-scale production.

Key Properties

• Appearance: Clear to pale yellow liquid
• CAS Number: 8001-79-4
• Chemical Formula: C18H34O2 (Ricinoleic Acid Component)
• Grade: USP / Technical
• Specific Gravity: 0.96–0.97
• Solubility: Soluble in alcohol; Insoluble in water
• Viscosity: High (~900–1000 cP at 25°C)
• Acidity: Low acid value for formulation stability
• Trace Metals: Controlled to USP limits (Pb, Fe, Zn, etc.)
• Odor: Mild, characteristic

Common Applications

• Pharmaceutical Manufacturing: Used as a high-purity excipient and carrier in pharmaceutical formulations, meeting pharmacopeial standards for purity and trace element limits.
• Cosmetic Formulations: Functions as a primary emollient and moisturizing agent in soaps, lotions, and hair care products, adding viscosity and barrier protection.
• Industrial Lubrication: utilized in high-performance bio-based lubricants and greases requiring high thermal stability and oxidative resistance.
• Coatings & Polyurethanes: Acts as a polyol source for polyurethane coatings, adhesives, and sealants (CASE applications), improving flexibility and hardness.
• Chemical Synthesis: Serves as a raw material for the production of sebacic acid, surfactants, and plasticizers.

Safety & Handling

Store in a cool, dry area away from direct sunlight to maintain chemical stability. Use HDPE, stainless steel, or glass containers to prevent contamination. While Castor Oil is generally non-hazardous for transport, standard industrial hygiene practices should be observed. Wear appropriate Personal Protective Equipment (PPE) such as gloves and eye protection during bulk handling to prevent slips or irritation.

This product is classified as non-regulated for transport (Standard Shipping). Refer to the Safety Data Sheet (SDS) for detailed safety, first aid, and disposal information prior to use.

Benefits

USP Grade Purity – Meets strict monograph requirements for use in regulated pharmaceutical and cosmetic applications.
High Viscosity & Lubricity – Excellent natural lubricant and carrier oil for mechanical and chemical processing.
Versatile Compatibility – Soluble in alcohols and compatible with a wide range of polar resins and polymers.

Related Products

• 100% Pure Castor Oil (Standard)
• 100% Pure Castor Oil ACS Grade