For manufacturers and formulators looking to enhance the performance of their polymer-based products, understanding the properties of key additives is paramount. Dioctyl Sebacate (DOS) is a prime example of such an additive, offering a unique set of characteristics that make it highly desirable across various applications. NINGBO INNO PHARMCHEM CO., LTD. is a trusted source for high-quality chemical compounds, and this guide aims to illuminate the essential properties of Dioctyl Sebacate.

Physically, Dioctyl Sebacate is described as a colorless, transparent oily liquid. This visual characteristic is often accompanied by a mild odor. Its molecular formula, C26H50O4, and molecular weight of 426.68 indicate a relatively large, ester-based molecule. Key physical properties relevant to its application include its boiling point, which is approximately 377°C (though lower values are often cited under reduced pressure), and its viscosity, typically around 25 c.p. at 25°C. Its refractive index, ranging from 1.449 to 1.451 at 25°C, is also an important specification for quality control.

Chemically, DOS is an ester, specifically the diester of sebacic acid and 2-ethylhexanol. As an ester, it possesses reactivity with acids and bases, and can hydrolyze under acidic or basic conditions. It is also important to note its interaction with strong oxidizing agents and its potential to generate flammable hydrogen when mixed with alkali metals and hydrides. For formulation stability, it is crucial to consider these reactive properties. However, in typical polymer applications, DOS is stable and functions effectively as a plasticizer.

The performance benefits of Dioctyl Sebacate are largely attributed to its excellent low-temperature flexibility and good volatility resistance. This means that polymers plasticized with DOS remain pliable and do not become brittle in cold conditions, and the plasticizer itself is less prone to evaporating, ensuring long-term product performance. It also demonstrates good extraction resistance against water and soapy solutions. These attributes make it a superior choice for applications requiring durability and sustained performance, such as in PVC cold-resistant plasticizer applications and as a synthetic rubber low temperature plasticizer.

Furthermore, DOS contributes positively to heat endurance, light resistance, and electrical properties of the polymers it plasticizes. This broad spectrum of benefits allows manufacturers to create materials that are not only flexible but also resilient and well-suited for diverse environmental exposures. The ability to blend DOS with other plasticizers, like phthalic esters, allows for further fine-tuning of performance characteristics, such as managing migration rates and optimizing compatibility with various polymer matrices.

NINGBO INNO PHARMCHEM CO., LTD. provides manufacturers with Dioctyl Sebacate that meets stringent purity standards, ensuring that the described properties are consistently delivered. Whether you are developing advanced polymer composites, high-performance lubricants, or specialized materials for extreme conditions, understanding the properties of DOS is key to successful formulation. Our commitment is to supply quality additives that empower your innovation.