Urethane Grade Castor Oil

Overview

CanCastor's Urethane Grade Castor Oil stands as a highly refined, premium natural polyol specifically engineered to meet the rigorous demands of advanced polyurethane (PU) and prepolymer manufacturing. This exceptional bio-based polyol is meticulously processed from select Ricinus communis seeds, ensuring unparalleled purity and consistent performance. As a triglyceride of ricinoleic acid, our urethane grade castor oil offers a unique hydroxyl functionality (typically 2.7-2.8) and hydrophobic properties, making it an indispensable raw material for formulators seeking to develop high-performance, sustainable polyurethane systems.

Leveraging decades of expertise in oleochemistry, CanCastor ensures that every batch of our Urethane Grade Castor Oil (CAS No. 8001-79-4; INCI: Ricinus Communis (Castor) Seed Oil) meets stringent industrial specifications, critical for predictable reaction kinetics and polymer morphology. Its inherent hydroxyl value and consistent chain length contribute to superior physical properties in the final urethane product, from enhanced flexibility and impact resistance to improved hydrolytic stability and adhesion. This makes it an ideal choice for diverse applications, including high-solids coatings, robust adhesives, flexible sealants, durable elastomers, and specialized rigid or flexible foams where bio-content and consistent quality are paramount. Our commitment extends from sustainable sourcing to advanced refining, providing a reliable, high-quality renewable resource for the global chemical industry.

Key Physical & Chemical Properties

CanCastor’s Urethane Grade Castor Oil is characterized by its precise chemical composition and physical attributes, crucial for its application in sensitive polyurethane reactions. Our product undergoes rigorous quality control to ensure batch-to-batch consistency.

• Hydroxyl Value: 160-168 mg KOH/g (ASTM D4273)
• Acid Value: < 2.0 mg KOH/g (ASTM D465)
• Saponification Value: 176-187 mg KOH/g (ASTM D1962)
• Iodine Value: 82-90 g I2/100g (ASTM D1959)
• Viscosity @ 25°C: 6.5-8.5 poise (ASTM D445)
• Moisture Content: < 0.1% (ASTM D1364)
• Specific Gravity @ 25°C: 0.956-0.966 (ASTM D1475)
• Color (Gardner): < 2.0 (ASTM D1544)