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Epoxidized soybean oil (ESBO)

Epoxidized soybean oil (ESBO) is a mixture of organic compounds resulting from the epoxidation of soybean oil. It is primarily used as a plasticizer and stabilizer for polyvinyl chloride (PVC). During production, the double bonds of unsaturated vegetable fatty acids are broken by using peroxides or peracids and replaced with additional oxygen atoms. Since the soybean oil already contains different organic compounds before processing, the epoxidized soybean oil is also a mixture of different epoxidized oils.

As a vegetable-based plasticizer for polyvinyl chloride (PVC), epoxidized soybean oil is an important alternative to additives containing phthalates in the food sector. The mixture is used, for example, in the manufacture of plastic seals for glass containers and strengthens the resistance of food packaging to environmental influences. Thanks to its highly reactive epoxy groups, it can also bind PVC decomposition products such as hydrochloric acid, which is produced when heated. In the manufacture of children's toys, epoxidized soybean oil is also often used as a plasticizer that is harmless to health. The mixture of substances is also used in the production of paints, varnishes, coatings, cable insulation, foils, plastic doors, plastic windows, pipes and other interior materials as well as cosmetics such as hair care products and nail polish.

At PENPET you can order the required amount of epoxidized soybean oil in an uncomplicated and sustainable way. We look forward to receiving your inquiry for an individual offer. The liquid can be delivered in ISO tank containers, in 1000 kg IBCs and in 200 kg drums.

CAS no. 8013-07-8
EINECS no. 232-391-0
Molecular formula: the mixture contains different compounds

Synonyms: Epoxidized Soybean Oil, Epoxidized Soya Bean Oil, ESBO, ESO

Areas of application: Used as a plasticizer and stabilizer in plastic products made from polyvinyl chloride (PVC)


More Information

Epoxidized soybean oil (ESBO) is a mixture of various fatty acid esters of soybean oil that have undergone epoxidation. The proportions of the various ingredients in the end product vary according to the composition of the raw material. An important component is epoxidized linolein, a fatty acid ester of glycerin and epoxidized linoleic acid. During the processing of the soybean oil, the double bonds of the unsaturated fatty acids are dissolved and replaced by the addition of an additional oxygen atom. This forms a bond to both carbon atoms involved. The resulting heterocyclic epoxide groups are highly reactive. As a result, epoxidized soybean oil is not only suitable as a plasticizer, but also as a stabilizing buffer that can bind decomposition products from plastics such as polyvinyl chloride (PVC) again.

Epoxidized soybean oil (ESBO) is a viscous, pale yellow liquid with a mild, characteristic odor. At temperatures below -10° C, the substance gradually changes into the solid state of aggregation. The mixture decomposes when heated, producing irritating and noxious gases. Epoxidized soybean oil is not soluble in water. On contact, it gradually settles on the water due to its slightly lower density. There is a certain solubility in relation to some organic solvents. The mixture is sparingly soluble in chloroform and moderately soluble in methanol.

Epoxidized soybean oil (ESBO) is largely chemically stable. However, it reacts with acids and oxidizing agents as well as with bases and reducing agents. In the presence of catalysts or when the substance is heated, uncontrolled polymerization reactions can also occur. Adding polymerization inhibitors such as hydroquinone monomethyl ether to the mixture inhibits this process.

Epoxidized soybean oil (ESBO) is harmless to health and is not a hazardous substance according to the GHS classification. It is not subject to any special transport regulations. In tolerance tests on animals, a slight skin-irritating effect was demonstrated.

The mixture is classified by the environmental authorities as generally hazardous to water. A penetration of the substance into the soil, the waste water or open waters is therefore to be avoided.

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