1. Dioctyl Sebacate (DOS) Product Overview
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📝 Product Overview

Dioctyl Sebacate (commonly known as DOS or Bis(2-ethylhexyl) sebacate) is a premium, high-efficiency cold-resistant plasticizer. With the CAS number 122-62-3 and chemical formula $C_{26}{H}_{50}{O}_4$, it is renowned for providing exceptional flexibility to polymers even at extremely low temperatures.

DOS is a clear, colorless liquid that offers superior plasticizing efficiency compared to standard plasticizers. In addition to its low-temperature performance, it features low volatility, high thermal stability, and excellent electrical insulation properties. It is often used in high-end PVC and synthetic rubber applications where durability in harsh environments is a primary requirement.

🔬 Key Specifications

• Appearance: Clear, colorless, oily liquid
• Purity: $\ge 99.0\mathrm{\%}$
• Color (APHA): $\le 30$
• Acid Value (mg KOH/g): $\le 0.05$
• Flash Point (Open Cup): $\ge {215}^{\circ }\text{C}$
• Density (20°C, g/cm³): $0.912-0.918$
• Heating Loss (${105}^{\circ }\text{C}$): $\le 0.3\mathrm{\%}$
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🚀 Application Areas

DOS is the industry standard for specialized PVC and rubber products that must remain functional and flexible in sub-zero conditions.

① Cold-Resistant Wire & Cable: DOS is primarily used in wire and cable insulation for outdoor electrical systems and aerospace applications. It prevents the cable sheath from cracking or becoming brittle when exposed to freezing temperatures, ensuring long-term safety and performance.

② Cold-Resistant Artificial Leather: Used in high-quality synthetic leather for automotive interiors, outdoor furniture, and footwear. DOS provides a soft, premium touch that lasts even in harsh winter climates without losing its structural integrity.

③ Specialty Rubber Products: Integrated into nitrile rubber (NBR) and other synthetic rubbers to improve their low-temperature flexibility. It is essential for manufacturing gaskets, seals, and hoses used in refrigeration systems and polar equipment.

④ Agricultural Film: Applied in specialty greenhouse films used in cold regions to maintain transparency and flexibility, ensuring the film does not stiffen or tear during winter months.

⑤Plastisols & Coatings: Used in high-performance coatings and PVC plastisols to improve flow properties during processing and provide a durable, flexible finish to the end product.

📦 Packaging and Storage

• Packaging: Typically supplied in 190 kg or 200 kg galvanized iron drums, 1,000 kg IBC tanks, or ISO tanks for bulk deliveries.
• Storage: Store in a cool, dry, and well-ventilated warehouse. Keep containers tightly closed and away from fire sources or oxidizing agents.
• Shelf Life: 12 months under standard storage conditions.