Natural Tung Oil, identified by its CAS number 8001-20-5, is a natural drying oil derived from the seeds of the Tung tree. Its unique chemical composition and physical properties have made it a valuable commodity across numerous industries, from traditional woodworking and protective coatings to emerging roles in chemical synthesis. Understanding these core attributes is key to appreciating its widespread utility.

Physically, Natural Tung Oil is typically described as a yellow liquid. Its specific gravity is approximately 0.937 g/mL at 25 °C, and its refractive index (n20/D) is around 1.52. These measurements are important for quality control and for predicting its behavior in various formulations. The oil's high flash point (Fp >230 °F) indicates a relatively low flammability risk during handling and storage, enhancing safety in industrial settings. Its storage temperature recommendation of 2-8 °C also suggests a need for controlled conditions to maintain its quality.

Chemically, the defining characteristic of Tung Oil is its high content of eleostearic acid, a polyunsaturated fatty acid with three conjugated double bonds. This structure is responsible for its superior drying properties. When exposed to air, these double bonds readily oxidize and cross-link, forming a tough, durable, and water-resistant film. This polymerization process is what makes tung oil for paints and wood finishes so effective, providing protection that penetrates and strengthens the substrate.

Beyond its role in coatings, the chemical structure also lends itself to use as a tung oil pharmaceutical intermediate. The reactive sites within the eleostearic acid molecule can be modified through various chemical reactions, allowing for the synthesis of more complex compounds. The growing interest in natural products for pharmaceutical development highlights the potential of ingredients like Natural Tung Oil. For businesses looking to leverage these benefits, partnering with a reliable tung oil supplier china like NINGBO INNO PHARMCHEM CO.,LTD. ensures access to the high-quality product needed for successful application.