Epoxidized Soybean Oil (ESO) Product Overview

📝 Product Overview

Epoxidized Soybean Oil (commonly known as ESO or ESBO) is a premium, bio-based plasticizer and secondary stabilizer derived from natural soybean oil. Its CAS number is 8013-07-8. It is a light yellow, viscous oily liquid that is recognized globally for its non-toxicity, environmental friendliness, and excellent compatibility with Polyvinyl Chloride (PVC).

As an eco-friendly alternative to traditional phthalate plasticizers, ESO not only imparts flexibility to PVC but also acts as a synergist with metallic soaps to improve heat and light stability. It effectively absorbs hydrogen chloride ($HCl$) released during PVC degradation, extending the lifespan and safety of the final products.

🔬 Key Specifications

• Appearance: Light yellow, viscous oily liquid
• Epoxy Value: $\ge 6.0\mathrm{\%}$
• Color (APHA): $\le 150$
• Acid Value (mg KOH/g): $\le 0.5$
• Flash Point (Open Cup): $\ge {280}^{\circ }\text{C}$
• Density (20°C, g/cm³): $0.985-0.995$
• Heating Loss (${105}^{\circ }\text{C}$): $\le 0.2\mathrm{\%}$
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🚀 Application Areas

ESO is widely utilized in sensitive PVC applications where non-toxicity and high stability are mandatory requirements.

① Food-Grade Packaging: ESO is an essential additive for food-contact materials such as cling films (transparent food wrap), bottle gaskets, and food container seals. Its FDA-approved safety profile ensures that no harmful substances migrate into food products.

② Medical Devices and Tubing: In the medical sector, it is used for blood bags, IV infusion sets, and dialysis tubing. ESO provides the necessary flexibility while maintaining the biocompatibility and chemical stability required for sterile medical environments.

③Children’s Toys: Used in the production of soft plastic toys and childcare products. Because it is free from phthalates, it meets the most stringent international safety standards (such as REACH and EN71) for children's products.

④ Wire and Cable Insulation: ESO serves as a secondary stabilizer in high-temperature wire and cable compounds. It improves the insulation's resistance to weathering and thermal aging, ensuring long-term safety in electrical installations.

⑤ Eco-Friendly Inks and Paints: It is increasingly used as a bio-based carrier and plasticizer in specialty printing inks and surface coatings to reduce VOC emissions and improve the flexibility of the dried film.

📦 Packaging and Storage

• Packaging: Typically supplied in 200 kg blue iron drums, 1,000 kg IBC tanks, or Flexitanks for efficient bulk transportation.
• Storage: Store in a cool, dry, and shaded warehouse. Protect from moisture and direct sunlight. ESO has good stability but should be kept sealed when not in use.
• Shelf Life: 12 months under standard storage conditions.