Product Details

Normal Butyl Acetate

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Normal Butyl Acetate

(Polyurethane Grade-Grade B)

 

Normal Butyl Acetate, also known as Butyl Ethanoate, is an ester that is naturally found in fruits and some chemicals. Butyl acetate is a compound with the chemical formula C6H12O2 and is a colorless, clear liquid. Butyl Ethanoate has a banana or apple-like odor. For this reason, it can be used as an artificial fruit flavoring in products such as ice cream, cheese, and chocolate. Butyl Ethanoate has three isomers and is obtained by esterification of butanol and acetic acid with sulfuric acid.

Butyl Ethanoate is readily soluble in many solvents such as alcohols, ketones, esters, and glycols. The solubility of this compound in water is lower. The melting and boiling points of butyl acetate are -78 and 126 degrees Celsius, respectively. The purchase price of butyl acetate depends on butanol. Because this alcohol is the main raw material in the production of butyl acetate. One of the physical properties of this compound is that it is flammable.

Usages

Butyl acetate is used for various purposes. Typically, butyl acetate is an excellent solvent for nitrocellulose, cellulose ethers, celluloid, chlorinated rubbers, polyvinyl acetate, polyvinyl chloride, Hostaflex, polystyrene, polyacrylates, most neutral resins, plasticizers, fats and oils. This has led to a wide range of uses for this substance. Hence, the highest use of butyl acetate is for the production of pharmaceutical products, followed by the production of various building paints and then the production of cosmetics.

*Adding it to diesel to prevent damage to vehicle engines
*Use as a solvent to produce various types of varnishes (varnish products, wood varnish, etc.)
*Use to produce nail care products such as decorative varnishes, varnish removers, foundation products and other nail care products
*Use as a flavoring and fragrance to produce products such as chocolates, ice creams, cakes and various types of yogurt and cheese.
*This substance is used as a thinning agent for dyes in ink used to mark fruits and vegetables.
*Butyl acetate is one of the most important ingredients required for the production of penicillin-G.
*Butyl acetate is used to produce various types of artificial leather, detergents, various types of plastics and unbreakable and safe glass.
*Since this solution is difficult and slightly soluble in water, it is used to produce pharmaceutical products.
*This substance is also used in the perfume and cologne industry.

Storage conditions

This liquid is highly flammable and ignites at 24°C. Therefore, this material should be stored in a dry, cool and well-ventilated area. It should also be kept away from direct sunlight and near heat and fire. This material should be stored in insulated tanks such as insulated tankers made of stainless steel, aluminum or carbon steel.

The condensed vapor of this material in the presence of air and sparks may cause an explosion and prolonged inhalation of this material can cause headaches, dizziness, nausea, drowsiness and irritation of the respiratory tract and eyes.

Butyl Acetate is a clear, colorless chemical with a fruity odor and is used as a solvent in the paint, resin, varnish, and adhesive industries. Its moderate evaporation power and high solubility make it particularly important in industrial formulations.

Common types of this product include sec-Butyl Acetate with different boiling points for specific applications, n-Butyl Acetate suitable for solvent-based paints, and isobutyl acetate with a mild odor for use in the cosmetic industry.

Important technical parameters of this product include boiling point, purity, isomer type, and evaporation rate, which determine the difference between these products.

 

This is a model chemical compound that is commonly used as a solvent for products such as nail polish, ink, and adhesives. It is a colorless liquid and is a neutral substance with a fruity odor.

One of the most common ways to create butyl acetate is through the esterification process of the isomers of butanol and acetic acid. During this process, we need to heat the two substances (i.e., the isomers of butanol and acetic acid) in the presence of a strong acid such as sulfuric acid. Butyl acetate, on the other hand, is formed by the reaction between an acid and an alcohol with the elimination of water.

Chemists have discovered that this substance is present in the alarm pheromones secreted by animals, especially insects. An alarm pheromone is a chemical that animals secrete when they are attacked. This substance actually warns other members of the same species that the area is in danger and makes them aware of this threat and attack so that they can defend themselves or escape.

Properties of normal butyl acetate

The main use of normal butyl acetate is its excellent solubility for polyvinyl chloride, polystyrene, softener neutralizing resins, fats, oils, celluloids, chlorinated rubbers, etc. Due to this property, butyl ethanoate is used in the production of building paints, cosmetics and pharmaceutical products. Among the applications of this compound are the following.

  • Butyl acetate is added to diesel fuel to prevent damage to vehicle engines.
  • In the production of decorative nail polishes, cleaning solutions, wood varnishes and other types of varnishes
  • In the production of dyes in ink as a diluent
  • For the production of penicillin G as a main ingredient
  • In the leather industry, the production of detergents, various plastics, unbreakable and safe glass
  • For the manufacture of perfumes and colognes
  • Manufacture of car care products

This compound is used.

With the significant growth in the use of this substance in China and some countries, the market for purchasing butyl acetate will flourish in the coming years.

 

What is Butyl Acetate? And what is its use?

In the article we will read, an attempt will be made to introduce the solvent butyl acetate. The uses of butyl acetate, formula, production method, physical and chemical properties, and finally safety tips regarding the product will be examined. In the following, I draw your attention to the rest of the article.

Introduction

Butyl acetate (Butyl acetate) or normal butyl acetate, also known as butyl ethanoate and butyl ester, is a colorless, liquid substance with a relatively pleasant odor slightly resembling the smell of fruit (banana) that is highly flammable. This substance is generally used as a solvent for the production of products such as industrial paints, cosmetic varnishes, inks, and adhesives. In terms of solubility or solubility, it is easily dissolved in a variety of solvent chemical raw materials such as alcohol, ketone, glycol and ester, but it is not so easy to dissolve in water. Chemists have discovered that normal butyl acetate is present in alarm pheromones secreted by animals, especially insects, when they are attacked in order to inform and warn their fellows. The elements present in this solvent include carbon, hydrogen and oxygen. It has a molecular weight of 116.16 g and a boiling point of about 127 degrees Celsius. In the process of making butanol alcohol, it reacts with acetic acid in the presence of heat and an acidic catalyst, under conditions to produce normal butyl acetate in various qualities and water (a by-product).

What is the formula of butyl acetate?

C6H12O2

Molecular structure of butyl acetateChemical formula of butyl acetate

Physical and chemical properties of butyl acetate

 

The physical and chemical properties of butyl acetate are listed in the table below:

Product nameButyl acetate
Chemical formulaC6H12O2
Molecular mass116.6 g mol−1
AppearanceColorless liquid
Density0.88 g/cm3
Melting point77℃
Boiling point127℃
Solubility in water10 g/L (@20.0 °C)
Refractive index (nD)1.394 (@20.0 °C)

 

Butyl acetate applications

One of the most important and common uses of butyl acetate in industry is as a very suitable solvent for the production of paints and varnishes. This substance has three isomeric forms and is widely used due to its characteristics such as high solubility in organic solvents, high stability against hydrolysis and decomposition, and its low ability to absorb moisture. On the other hand, this substance is used in the production of adhesives and coatings for surfaces with high hardness. Below we will learn about the uses of butyl acetate in other industries:

  • Butyl acetate has various uses in the pharmaceutical industry. It is one of the most important compounds required for the production of penicillin-G. Antibiotics, hormonal compounds, vitamins, and plant extracts are other uses of this substance. It is also a very good adsorbent for tonic drugs due to its low volatility and good skin permeability.
  • It is also used in cleaning products, personal care products, and perfumes due to its pleasant smell.
  • This solvent is also used in the production of nail care products such as decorative varnishes, varnish removers, base products, and other nail care products.
  • Other uses of this ester compound include the production of artificial leather, detergents, various plastics, and safe and unbreakable glass.
  • Butyl acetate is a solvent that, when added to diesel, prevents damage to vehicle engines.
  • In the past, it was also used as a flavoring for the production of products such as chocolate, ice cream, cakes, and various yogurts and cheeses.

 

Butyl acetate application in the resin and paint industry
Butyl acetate application in the resin and paint industry

 

Butyl acetate production

The process of producing butyl acetate is through the esterification of butanol. Esterification is a reversible reaction between an alcohol and an organic acid (acetic acid) in the presence of a strong mineral acid such as sulfuric acid, which produces a compound called an ester. This process is accompanied by the production of water.

C4H9OH + CH3COOH    = > CH3COOC3H9 + H2O

In the method of making butyl acetate, first normal butanol and acetic acid are introduced into the reactor and then sulfuric acid is added as a catalyst in the amount of one percent by weight. Due to the endothermic nature of the esterification reaction, the reaction starts due to heat, and this reaction continues until the temperature in the distillation tower is constant and a uniform state is created. Therefore, the flow of raw materials entering the reactor in its production line should be adjusted according to the distillation speed in the tower. After this stage, water is separated from the produced butyl acetate. The product obtained from this stage has a weight percentage of about 83 and contains catalyst and residual alcohol. To purify this product, the acid content in it is first neutralized with sodium carbonate in a neutralization tank and then washed with water.

After the formation of a two-phase liquid, water is drained from the bottom, and the upper layer, which is urethane grade, is transferred to a distillation tower to increase purity, and the purified butyl acetate is removed from the bottom of the tower and transferred to a storage tank. Therefore, depending on the manufacturing method and different equipment, the quality of this product can be different, and this characteristic affects its price.

Butyl acetate in Sepehr Petrochemical Laboratory

 

Safety tips for butyl acetate

The following points can be mentioned regarding the safety tips that should be observed in the field of work and use of this solvent:

  • Butyl acetate is classified as a flammable substance both with fire and in reaction with air and water. And it can be easily ignited at high temperatures or in the presence of flames. Even its vapors are heavy and can form explosive mixtures with air, so complete safety must be observed during transportation.
  • The normal storage location of butyl acetate should be cool, dry with proper ventilation and avoid placing it next to incompatible materials such as strong oxidizing agents and substances and acids. Keep away from direct sunlight, heat and flammable materials.
  • Inhalation of this substance should be avoided, as it causes headache, drowsiness, burning mouth, double vision and nausea. If urethane grade comes into contact with the eyes, immediately flush the eyes with cold water for ten minutes and seek medical attention.