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 (castor bean). This USP-grade product is formulated to meet stringent pharmacopeial specifications while delivering consistent performance in pharmaceutical, cosmetic, and industrial formulations. The oil is characterized by a high viscosity and a distinctive fatty acid profile, predominantly ricinoleic acid, which governs its rheological behavior, lubricity, and emollient properties. With a clear to pale yellow appearance and a mild, characteristic odor, it provides reliable batch-to-batch consistency verified by a comprehensive certificate of analysis (COA) and strict quality controls aligned to USP-NF Monograph requirements. The product is thermally stable under recommended storage and exhibits a narrow impurity profile suitable for sensitive applications where purity and traceability are essential.

The composition and physical properties support diverse applications, including pharmaceutical laxative formulations, cosmetic moisturizers, industrial lubricants, plasticizers, and surfactant systems. The material’s high viscosity (approximately 900–1000 cP at 25°C) and insolubility in water, with solubility in organic solvents, enable predictable dosing and consistent performance in emulsion systems and carrier oils. This castor oil is maintained under controlled conditions to preserve quality, ensuring compatibility with a wide range of excipients, polymers, and processing environments. It adheres to USP specifications and is suitable for both laboratory-scale development and industrial manufacturing.

Key Properties

• Appearance: Clear to pale yellow liquid
• Chemical Formula: C₅₅H₉₀O₉
• Molecular Weight: 890.0 g/mol
• Boiling Point: N/A
• Specific Gravity (20°C): 0.96–0.97 (typical 0.966)
• Residue on Ignition: ≤ 0.5% (typical 0.2%)
• Chloride (Cl): ≤ 1 ppm (typical 0.3 ppm)
• Nitrate (NO₃⁻): ≤ 5 ppm (typical 2 ppm)
• Ammonium (NH₄⁺): ≤ 5 ppm (typical 2 ppm)
• Sulfate (SO₄²⁻): ≤ 20 ppm (typical 5 ppm)
• Phosphate (PO₄³⁻): ≤ 5 ppm (typical 2 ppm)
• Arsenic (As): ≤ 0.5 ppm (typical 0.1 ppm)
• Heavy Metals (Pb): ≤ 5 ppm (typical 1 ppm)
• Iron (Fe): ≤ 0.5 ppm (typical 0.1 ppm)
• Copper (Cu): ≤ 0.3 ppm (typical 0.1 ppm)
• Manganese (Mn): ≤ 0.3 ppm (typical 0.1 ppm)
• Nickel (Ni): ≤ 0.2 ppm (typical 0.05 ppm)
• Zinc (Zn): ≤ 2 ppm (typical 0.5 ppm)
• Aluminum (Al): ≤ 1 ppm (typical 0.3 ppm)
• Chromium (Cr): ≤ 0.5 ppm (typical 0.1 ppm)
• Cobalt (Co): ≤ 0.1 ppm (typical 0.02 ppm)
• Calcium (Ca): ≤ 5 ppm (typical 1 ppm)
• Magnesium (Mg): ≤ 2 ppm (typical 0.5 ppm)
• Potassium (K): ≤ 2 ppm (typical 0.5 ppm)
• Sodium (Na): ≤ 2 ppm (typical 0.5 ppm)
• Sulfurous Acid (H₂SO₃) Residue: ≤ 10 ppm (typical 5 ppm)
• Water Content: ≤ 0.2% (typical 0.1%)
• Acidity (Meq): ≤ 0.5 (typical 0.2)
• Free Chlorine: 0–0.2 wt% (typical 0.05)
• Odor: Mild, characteristic
• Appearance (TDS): Clear to pale yellow liquid

Common Applications

• Laxative Agent: Pharmaceutical-grade castor oil used in traditional stimulant laxative formulations, with controlled ricinoleic acid content and purity suitable for oral administration following pharmacopeial guidelines.
• Emollient in Cosmetics: Used as a moisturizing base oil in skin and hair care products, providing viscosity, barrier support, and slip for topical formulations.
• Lubricant: Industrial lubricant in gear systems and machinery where high lubricity and oxidative stability are advantageous.
• Plasticizer: Additive in flexible plastics and elastomeric formulations to improve flexibility and processing characteristics.
• Surfactant System Component: Functions as a nonionic surfactant-like component in emulsions and cosmetic/industrial formulations, aiding dispersion and phase stability.

Safety Precautions

Store in a cool, dry place away from direct sunlight, in containers made of HDPE or glass to minimize contamination. Maintain proper ventilation when handling to avoid inhalation of vapors, and employ appropriate PPE including gloves and protective eyewear during transfer and processing. The product is prepared under controlled conditions and complies with USP-NF Monograph requirements; ensure batch COA is consulted prior to use for trace metal content and water levels to meet specification limits.

Protective measures include standard industrial hygiene practices, with attention to limits on exposure and spill response. In case of contact with eyes or skin, rinse thoroughly with water and seek medical advice if irritation persists. In the event of accidental ingestion, rinse mouth and seek medical attention if symptoms occur. The SDS indicates a WARNING classification with no additional hazard statements; transport is not regulated. Follow established emergency procedures for your facility and consult the SDS for complete handling and first-aid guidance.

Benefits

✔ High Purity USP Grade – Conforms to USP-NF monograph with stringent impurity controls and trace metal limits, ensuring reproducible performance in pharmaceutical and cosmetic products.
✔ Stable, Viscous Carrier – Long-chain triglyceride oil with consistent viscosity (~900–1000 cP at 25°C) that supports predictable flow and formulation behavior in emulsions and carrier systems.