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Butyl acetate (Butyl acetate)

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Butyl acetate

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Butyl acetate
Acetic Acid Butyl Ester
butanol acetate
Acetate de butyle
Acetic acid, butyl ester
N-BUTYL ACETATE
Butylacetat
n-Butyl ethanoate
acetic acid n-butyl ester
Butyl Acetate
Butyl ethanoate
Acetic acid,butyl ester

+Expand -Stow

123-86-4

C6H12O2

116.158

2915330000

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Nature Description

Colorless liquid has a fruit smell

4(vsair)

124-126?°C(lit.)

?78?°C(lit.)

-77.9℃

22°C(72°F,295K)

0.7g/100mL(20oC)

n20/D1.394(lit.)

0.7g/100mL(20oC)

Product Applications

Used in the industry of viscose, nitrocellulose, varnish, artificial leather, medicine, plastics and spices. It is an excellent organic solvent, which can dissolve Rosin, polyvinyl acetate, polyacrylate, polyvinyl chloride, chlorinated rubber, Eucommia ulmoides gum, polymethyl methacrylate, etc.; Used as analytical reagent..

Production method

1. It is obtained by the ester of acetic acid and n-butyl alcohol in the presence of sulfuric acid. Butyl alcohol, acetic acid and sulfuric acid are put into the ester kettle in proportion, and the ester is carried out at 120℃. After reflux dehydration, the acid value during the ester is controlled below 0.5. After neutralization, the obtained crude ester enters the distillation kettle, after distillation, condensation and separation, reflux dehydration is carried out, alcohol ester is recovered, and finally the product is obtained by distillation below 126℃. The production process includes continuous method and batch method, depending on the production scale. Raw material consumption quota: Acetic acid (98%)540kg/t, n-butyl alcohol 650kg/t. In recent years, scientific research reports on the development and application of solid acid, heteropolyacid and other catalysts instead of sulfuric acid to reduce equipment corrosion have increased day by day, but no reports have been successfully used in industrial production. 2. It is obtained by the ester of acetic acid and n-butyl alcohol in the presence of sulfuric acid. Refining method: generally containing free acetic acid and butyl alcohol. If the raw material is produced by fermentation, it still contains a small amount of isobutyl acetate, isobutyl alcohol, amyl acetate, hexyl acetate, etc. When refining, wash with sodium bicarbonate or sodium carbonate saturated solution, then wash with sodium chloride saturated solution, dry with anhydrous potassium carbonate, sodium sulfate or magnesium sulfate, and then rectify. Residual water and alcohol and ester form an azeotropic mixture and become the initial fraction to remove. Other refining methods include distillation first, then adding a small amount of potassium permanganate to reflux in batches until the purple of potassium permanganate does not disappear, and anhydrous calcium sulfate is dried, filtered and rectified again. 3. Carry out distillation, ultra-clean filtration and ultra-clean sub-packaging of industrial butyl acetate. 4. Preparation Method: Add 98% formic acid 61G (1.33mol) and anhydrous ethanol to the reaction bottle equipped with reflux condenser. (2)31G (0.67mol), YILI zeolite, heating Reflux reaction for 24 hours. Change to distillation device for distillation, collect the fraction below 62℃, slide out the liquid saturated with sodium chloride, and then wash with saturated sodium bicarbonate and saturated sodium chloride solution successively. Anhydrous sodium sulfate is dried, fractionated, and the fraction of 53 ~ 54℃ is collected to obtain Butyl formate. (1)36G, yield 72%.