Isopropyl myristate is a colorless and odorless liquid that can be mixed with vegetable oil in any proportion to become transparent. It is not easy to hydrolyze and become rancid, and can be mixed with alcohols and ethers. Miscible with organic solvents such as , methylene chloride, and grease.
There are three ways to generate and obtain isopropyl myristate:
It is obtained by esterification of myristic acid obtained by redistilling coconut oil and isopropyl alcohol.
Add 200kg tetradecanoic acid and 450kg isopropanol into the reaction kettle in sequence, add 360kg (98%) sulfuric acid after mixing, heat and reflux for 10h, and recover the isopropyl alcohol. Propanol, wash the acid with ice water, neutralize it with 10% Na2CO3 aqueous solution, steam isopropyl alcohol and water under normal pressure, and steam the product under reduced pressure to 185℃/2.0kPa~195℃/2.7kP.
Add 90kg of isopropanol into the reactor, and then add sulfuric acid equivalent to 5% of the total input as a catalyst. Slowly add 228 kg of tetradecanoic acid under stirring, heat to reflux, and continuously separate water. After reaction until no water separates, lower the temperature and take a sample to measure the acid value. The acid value reaches 1.5 mgKOH/g as the end point. Add alkali to neutralize, remove water under reduced pressure, and dealcoholize under reduced pressure to an acid value of 0.05 to 1.0 mgKOH/g. The finished product is the finished product.
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