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4.
Technical formula (kg/t)
5.
Main equipment
Oxidation reaction pot, acidification pot, storage tank, vacuum distillation kettle
.
6.
Production process
Add 3l kg of liquid caustic soda and water to the oxidation reaction pot, then add 24kg of 2-ethylhexanol , stir, and add 72kg of potassium permanganate at 20°C in portions , and react at 40°C for 8-12 hours until the red color disappears.
.
Spin filtration, wash twice with water, acidify the filtrate with 31mol/L sulfuric acid to pH 1-2, divide the oil layer, distill under reduced pressure, collect the fraction of 110～130℃/20×133.
7.
Laboratory method
Add 30g 2-ethylhexanal and silver oxide (prepared with 90g silver nitrate and theoretical amount of barium hydroxide ) into a 300mL three-necked reaction flask , mix well, and slowly add 600mL 0.
25mol under vigorous stirring and cooling.
/L barium hydroxide solution, then let it stand for 12h, and let CO 2 in
.
Excess barium hydroxide precipitated out, filtered, and the filtrate was acidified with sulfuric acid
8.
Product Standard
9.
Product use
2-Ethylhexanoic acid is mainly used to prepare various esters and salts
.
Its zirconium, cobalt, molybdenum, zinc and other salts are used as paint driers and heat stabilizers for polyethylene plastics; tin salts are used as additives for plastic pipes, and barium and cadmium salts are used as stabilizers for plastic rolling products
10.
Security measures
(1) This product has low toxicity and is a strong organic acid
.
It is irritating to the skin.
(2) This product is flammable, so fire prevention should be paid attention to during production, storage and transportation
Related links: Product performance and production principle of 2-ethylhexanoic acid
