Bis(2-ethylhexyl) Sebacate (CAS 122-62-3): Comprehensive Technical Guide
What is Bis(2-ethylhexyl) Sebacate?
Bis(2-ethylhexyl) sebacate, widely recognized by the trade name Dioctyl Sebacate (DOS), is a high-performance linear ester derived from Sebacic Acid. Registered under CAS Number 122-62-3, it is classified as a premium cold-resistant plasticizer and a high-stability synthetic lubricant base oil.
Its molecular structure provides exceptional low-temperature flexibility and thermal stability, making it indispensable in aerospace, automotive, and high-end polymer industries.
Applications of Bis(2-ethylhexyl)sebacate (CAS 122-62-3)
Bis(2-ethylhexyl)sebacate (CAS 122-62-3) is a high-performance plasticizer with extensive applications in polymer processing and other industries, thanks to its excellent compatibility, low volatility, and superior plasticizing properties. Its key applications are as follows:
1. Plastic and Polymer Industry
It is primarily used as a plasticizer for polyvinyl chloride (PVC), the most widely used synthetic polymer. DOS effectively improves the flexibility, toughness, and low-temperature resistance of PVC products, making it suitable for the production of flexible PVC items such as medical tubes, hoses, cables, films, and artificial leather. It also enhances the processability of PVC during extrusion, calendering, and injection molding, reducing production costs and improving product quality. Additionally, it is compatible with other polymers like polyvinyl acetate (PVA), polyurethane (PU), and synthetic rubbers, expanding its application scope.
2. Medical and Pharmaceutical Field
Due to its non-toxic, odorless, and biocompatible properties, Bis(2-ethylhexyl)sebacate is widely used in the medical industry. It serves as a plasticizer for medical-grade PVC products, including infusion tubes, blood transfusion sets, catheters, and medical films. It meets international medical standards, ensuring no harmful substances are released during use, and maintains the flexibility and sterility of medical devices.
3. Coatings and Adhesives
In the coatings and adhesives industry, DOS is used as a plasticizer and softener to improve the flexibility, adhesion, and weather resistance of coatings and adhesives. It helps prevent coatings from becoming brittle and cracking, and enhances the bonding strength of adhesives, making them suitable for use in harsh environments. It is commonly used in water-based coatings, solvent-based coatings, and pressure-sensitive adhesives.
4. Rubber and Elastomers
It acts as a softener and plasticizer for synthetic rubbers (such as nitrile rubber, styrene-butadiene rubber, and neoprene), improving the processing performance and low-temperature flexibility of rubber products. It helps reduce the hardness of rubber, enhance its elongation at break, and improve its resistance to aging and oxidation, making it suitable for the production of rubber seals, gaskets, and hoses.
5. Other Applications
Bis(2-ethylhexyl)sebacate is also used as a lubricant and plasticizer in the production of cosmetics, such as lipsticks, lotions, and creams, to improve product texture and spreadability. In addition, it is used as a solvent in organic synthesis, a plasticizer for cellulose derivatives, and a component in hydraulic fluids and lubricating oils due to its good thermal stability and low volatility.
Frequently Asked Questions (FAQs)
Q1: What is the CAS number of Bis(2-ethylhexyl)sebacate?
A1: The CAS number of Bis(2-ethylhexyl)sebacate is 122-62-3, a unique identifier used to classify and track this chemical compound in global chemical databases and regulatory systems.
Q2: What is the purity of your Bis(2-ethylhexyl)sebacate?
A2: Our Bis(2-ethylhexyl)sebacate has a minimum purity of 99.0% (tested by GC), ensuring high performance and reliability for various industrial and medical applications. We also offer customized purity levels based on specific customer needs.
Q3: How should Bis(2-ethylhexyl)sebacate be stored?
A3: It should be stored in a sealed, corrosion-resistant container in a cool, dry, and well-ventilated area. Keep it away from direct sunlight, heat sources, and incompatible substances (such as strong acids, bases, and oxidizing agents). When stored properly, it has a shelf life of 24 months from the date of manufacture.
Q4: Is Bis(2-ethylhexyl)sebacate soluble in water?
A4: No, Bis(2-ethylhexyl)sebacate is insoluble in water. It is highly soluble in common organic solvents such as ethanol, ether, benzene, chloroform, and acetone, which is essential for its application in polymer processing and organic synthesis.
Q5: What are the main applications of Bis(2-ethylhexyl)sebacate?
A5: Its main applications include serving as a plasticizer for PVC and other polymers, a softener for synthetic rubbers, a component in medical devices, a plasticizer in coatings and adhesives, and a lubricant in cosmetics and industrial fluids. It is widely used in the plastic, medical, coating, and rubber industries.
Q6: Do you provide a Certificate of Analysis (COA) for each batch?
A6: Yes, we provide a detailed Certificate of Analysis (COA) for every batch of Bis(2-ethylhexyl)sebacate. The COA includes key specifications such as purity, acid value, appearance, and molecular weight, ensuring full traceability and quality assurance for our customers.
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