Preparation method of caproic acid

① It is directly separated from glycerides in various fats, cocoa butter and coconut oil.

② Caproic acid can be obtained from byproduct of butyric acid fermentation broth by distillation.

③ Crude caproic acid was obtained by oxidation of SEC octanol with nitric acid at 100 ℃. Hexanoic acid can be prepared by taking out the organic phase, washing it with water, dehydration and vacuum distillation.

④ Catalytic reduction β- Caprolactone can be used to prepare caproic acid.

⑤ In the presence of NaNH2, potassium acetate reacts with 1,3-butadiene to produce caproic acid.

⑥ Hexanoic acid can be prepared by catalytic oxidation of n-hexanol.

application area 

1. caproic acid is an edible flavor permitted in China, which is mainly used in cheese, cream and fruit essence. The dosage is 450mg/kg in the seasoning according to the needs of normal production; 28mg/kg in candy; 22mg/kg in baked goods; 4.3mg/kg in cold drinks. The utility model relates to a basic organic raw material, which can be used to produce various hexanoate products. In medicine, it is used to prepare hexamine. It can also be used as thickener of perfume and lubricating oil, rubber processing aid, varnish drier, etc.

2. caproic acid is an edible flavor in China, which is used to prepare various essence and synthesize other food flavors as raw materials. It is mainly used in cheese, cream and fruit essence. The dosage shall be 450mg/kg in seasoning and 28mg/kg in candy according to normal production needs; 22mg/kg in baked goods; 4.3mg/kg in cold drinks.

3. manufacture of spices, synthetic resins and rubbers. It is also used in the pharmaceutical industry.