What Is Epoxy Soy Oil

Epoxy Soybean Oil Epoxy soya


Alias: epoxidized soyabean oil; ESO.


Structure Type:


Soybean oil is composed of a variety of fatty acids: palm oil 11%, stearic acid 4%, oleic acid 25%, linoleic acid 51%, linolenic acid 9%, and so on, the composition of epoxy soybean oil products is more complex, the average molecular weight is about 950.


Appearance: light yellow oily liquid, solidification point-10~5℃, boiling point 150 ℃ (533Pa, and accompanied by decomposition), relative density 0.985~1.000 (25 ℃), refractive index (25 ℃) 1.472, flash point 280~310℃, ignition points 310c℃. Dissolved in hydrocarbons, ketones, esters, butanol and high carbon alcohol and other organic solvents, slightly soluble in ethanol, insoluble in water, in the water solubility of less than 0.01% (25 ℃), water in the solubility of this product is 0.55% (25 ℃). This product is extremely low toxicity, toxicity coefficient t=1000, rats through mouth LD50 for 22.5g/kg weight, FDA and the World Health laws and regulations are licensed for food packaging materials.


Preparation method: (1) formic acid and hydrogen peroxide in the presence of sulfuric acid, the production of formic acid, and then with the soybean oil reaction, the formation of epoxy soybean oil, the recovery of formic acid into formic acid. Becausehydrogen peroxide or peroxide decomposition at high temperature, the reaction should be controlled at a lower temperature, generally at room temperature, benzene for the medium.


(2) Soybean oil 1000kg, formic acid 140kg, sulfuric acid 3kg, and benzene 350kg input acid kettle history reactor, mixing evenly, slowly drip add 40% concentration of hydrogen peroxide, control at room temperature, after adding hydrogen peroxide, and then continue to stir for some time, until the reaction temperature began to fall, the reaction reached the end point.


(3) The reaction liquid static separation to the lower layer of waste liquid, the oil layer first with 2%~5% soda Liquid neutralization, and then washed to neutral, after the water, the oil layer for steam distillation, remove the low boiling and water, and then through the pressure filter that finished.


Soybean oil consumption per ton of soy 1000 kg, hydrogen peroxide (40%) 670 kg, formic acid (85%) 140 kg, benzene kg.


Product Standard:


Appearance of yellow oil-like liquid color (PT-CO)/number ≤400


Relative density (20 ℃) 0.985 ~0.990 Flash point/℃≥280


Acid value/(mgkoh/g) ≤0. 5 Epoxy Value/%≥6.0


Heat decrement (125℃/3H)/%≤0.3 thermal stability (177℃,3h after epoxy)/%≥5.0


Uses: Epoxy soybean oil used as plasticizer and heat stabilizer for polyvinyl chloride, widely used. It has good compatibility with polyvinyl chloride, small volatility, small mobility, no toxicity. In addition, the 2~3 of PVC soft products can have good heat and light stabilizing effect. This product can be used in food packaging materials.