The properties of dibutyl phthalate (DBP), which is an organic chemical compound of the phthalate group, are very diverse. In the molecular structure of this chemical compound, there is a benzene ring with two carboxylic acid substitutions that form the reactive groups. The chemical compound dibutyl phthalate is used as a solvent in the rubber and plastics industries. This compound plays the role of plasticizer or softener in the plastics industry. Many countries currently produce this organic compound, so the amount of supply and demand in global markets for the sale and purchase of DBP depends on the consumer industry. In the continuation of this PETROPROVIDERS article, join us to fully explore the properties of dibutyl phthalate and its applications.

What is dibutyl phthalate? What is its chemical structure?

dibutyl phthalate Chemical Structure

dibutyl phthalate Chemical Structure

It is an organic compound with the formula C6H4(CO2C4H9)2. Dibutyl phthalate (DBP) is a phthalate in terms of classification, which is a diester of phthalic acid (with the normal branch of butanol). This material is used as a plasticizer for plastics. Dibutyl phthalate is a clear, colorless oily liquid (sometimes industrially it is pale yellow).

This material is known by various names in global industries. Common DBP names are:

  • Di n-butyl phthalate
  • Butyl phthalate
  • n-Butyl phthalate
  • Dibutyl phthalate

It is known as a popular chemical among industries. It should be noted that the production of this material is done in special conditions and must be done by the standards. (Here are some ways to make dibutyl phthalate.) In general, the chemical structure of DBP is shown as follows:

dibutyl phthalate structure

dibutyl phthalate structure

DBP is not soluble in water but combines well with organic solvents. Dibutyl phthalates are classified in the phthalate family, and this large family includes a variety of toxic and non-toxic chemical compounds, each of which is used to make different products and is present in human life.

The first phthalates produced were patented in 1846 but did not have mass production until 1931, after which they quickly replaced camphor in various industries.

The properties of dibutyl phthalate (DBP) are well known; It is a liquid with oil-like properties that has a very pleasant smell and has a softening and flexible role in a variety of plastic products. It can ignite at 187 ° C and gain a viscosity at 25 ° C or higher.

The most important sources of Iran Dibutyl Phthalate

In the plastics industry, phthalates are used as emollients to make them flexible and elastic. In global industries, 6 types of phthalates are most used:

  • Dihexyl phthalate
  • Dibutyl phthalate
  • Diisononyl phthalate
  • Diisobutyl phthalate
  • Diisodecyl phthalate
  • Monobutyl phthalate

Dibutyl phthalate is naturally produced by some animals and plants. The use and disposal of products containing phthalates are released during production in the environment. Air, drinking water, and the physical environment around consumers are exposed to these chemicals.

Phthalates are found in materials such as cosmetics, medical devices, plastics, paints, lubricants, or lubricating oils, foaming agents, cardamom adhesives, cleaning products, inks, clothing, pesticides, and toys.

Phthalates are also used in the food industry and food packaging. These chemical compounds are also found in production equipment such as conveyor belts and plastic pipes and hoses.

Many food packaging materials can contain dibutyl phthalates, including PVC and other plastics, printing inks that are used on flexible food packaging. In addition, the adhesives used for paper and cardboard have regenerated cellulose (cellophane), paper-aluminum foil layers, and bottle sealing caps with DBP.

Phthalates are transported from packaging to foods, especially high-fat products and oils, and the rate of transfer to food from packaging increases with increasing temperature.

Food research has shown that although packaging contributes to the presence of phthalates in food products, it is not the only source of chemicals. A UK study published in 1995 found that measured levels of DEPH and DBP in some products were higher than expected if all the DEPH and DBP in the packaging had been transferred to the intended foods.

In addition, the phthalate level in the center of the product was equal to or higher than that on the food surface, where the product comes in contact with the packaging. These results suggest that environmental sources contribute, at least in part, to the presence of phthalates in foods.

The most important and best method of producing dibutyl phthalate

producing dibutyl phthalate

producing dibutyl phthalate

Today, dibutyl phthalate is formed by the reaction of normal butanol alcohol with an acid (such as phthalic anhydride). These compounds are not expensive and are easily available and the production process is not difficult.

This chemical oil is a known toxic substance that is extremely dangerous for humans and the environment and can easily penetrate the soil and, in addition to soil, contaminate groundwater; For this reason, the use of this substance is prohibited in European and American countries, and the only users of this toxic oil are the countries of Southeast Asia and the Pacific.

dibutyl phthalate Producing

dibutyl phthalate Producing

For the industrial production of this material, the reaction of phthalic anhydride with normal butanol is used. This reaction is as follows:

C6H4(CO)2O + 2C8H17OH → C6H4(CO2C8H17)2 + H2O

Investigation of the most important properties of dibutyl phthalate

properties of dibutyl phthalate

properties of dibutyl phthalate

This substance is very toxic and dangerous! The use of dibutyl phthalate, like the use of dioctyl phthalate and the use of phthalic anhydride, is harmful to human health and the environment. This substance is generally prohibited for the production of children’s toys. In addition, due to the properties of dibutyl phthalate, this substance is also limited to the production of home appliances.

This means that unlike different grades of polystyrene that are used to produce home appliances and toys, the use of this material is limited! For example, General Purpose polystyrene is used to make disposable tableware as well as thin sheets. High impact polystyrene or hips are also used to produce a variety of impact-resistant products. These polystyrenes are impact-resistant and are not dangerous to human health and the environment.

We know that this substance is used in various industries; The reason for these diverse uses of dibutyl phthalate is the unique properties of this substance. The physical and chemical properties of dibutyl phthalate are as follows:

  1. Iupac name: di-butyl benzene-1,2-dicarboxylate
  2. Common names: Butyl phthalate – DBP
  3. Molecular formula: C16H22O4
  4. Danger: Low risk – Toxic to humans – Toxic to aquatic animals
  5. Solubility in water: 13 mg per liter
  6. Mole mass: 278.34 grams per mole
  7. Density: 1.05 g / cm3
  8. Boiling point: 340 ° C
  9. Melting point: 35 ° C
  10. Vapor pressure: 0.00007 mm Hg

These features make it easy to use DBP in various industries and this material can easily meet the needs of consumers. In the continuation of this article from PETROPROVIDERS, we will examine the types of applications of dibutyl phthalate.

Investigation of the most important applications of Dibutyl Phthalate

dibutyl phthalate uses

dibutyl phthalate uses

The properties of dibutyl phthalate are very good advantages that have increased the applications of this substance. Different applications of dibutyl phthalate in different industries are:

  • Due to its non-toxic properties, it is used as an important plasticizer (plastic softener).
  • Used as an additive in the production of adhesives, printing inks, varnishes, and polishes
  • Use of DBP as a solvent in the tire industry
  • Application in cosmetics as an aromatic solvent, stabilizer, skin emollients or nail implant solutions and beauty products
  • Application in all types of flooring
  • Car tire equipment
  • PVC compounds
  • Power Cables
  • Production of rubbers for floor coverings and sealants
  • Packed in 200 kg metal barrels

The most important applications of dibutyl phthalate are often reported in industrial applications. This organic compound is used as a plasticizer in a wide range of resin, coating, and polymer industries. The DBP compound is also used as a softener in the adhesive, varnish, polish, and printing inks industries.

Dibutyl phthalate is used in the production of cosmetics and products as an aromatic and stabilizing solvent. DBP would be a great choice if the products are aerosol or lubricating. Skin emollients or nail implant solutions (beauty products) are produced using the same organic material.

Dibutyl phthalate is widely used in the resin, polymers, and coatings industries as emollients and softeners. This oil is also used in the manufacture of polyvinyl chloride plastics to make the plastics more flexible.

This substance has a very pleasant smell and is used in the manufacture of perfumes and colognes, but according to the commercial rules of perfumery, perfumers cannot name this substance in the list of ingredients of the perfume.

Storing, transportation, and safety tips of dibutyl phthalate

safety tips of dibutyl phthalate

safety tips of dibutyl phthalate

Many of the substances used as raw materials in various products are toxic and endanger human health. However, these toxic substances have no alternative and modern man has to use these chemical raw materials. One of these toxic and widely used substances is dibutyl phthalate, which is found in plastic products.

The best DBP storage conditions are to store this material in a cool, dry place, away from direct sunlight, away from heat and flame, and in a well-ventilated place. The use of this chemical has been banned in most European countries as well as the United States because it is dangerous to the environment, but it is still used in Asian countries.

Dibutyl phthalate is a known toxic and carcinogenic substance and is easily absorbed through the skin. If this substance stays on the skin for a long time, it can affect DNA and cause genetic mutations in humans.

This substance can sterilize and disrupt the rhythm of the body’s hormones and in pregnant women can cause fetal defects or abortions. So in general, toxicity is one of the most important properties of dibutyl phthalate.

If children are exposed to this substance for a long time, it can cause liver and kidney failure in their bodies and lead to hyperactivity disorder, attention deficit, and autism. Other risks of using and producing dibutyl phthalate include obesity and type 2 diabetes, asthma, and breast cancer.

A brief review of the dibutyl phthalate market

A brief look at the market for dibutyl phthalates in the world, we see that statistics have shown that this substance is banned in the group of phthalate compounds in most European countries as well as in the United States; Because it is dangerous for the environment.

But in Asian countries, this substance is still used. Southeast Asian and Pacific countries produce more than 80 percent of the world’s material. Declining market demand in European countries has reduced the trend of exporting this compound to European regions and the United States. DBP’s main consumer market is limited to Asian and Southeast Asian countries.

Purchasing Iran Dibutyl Phthalate, in addition to increasing the country’s production, can increase the prosperity of the dibutyl phthalate production business.

A summary of the properties of dibutyl phthalate and its various applications

Dibutyl phthalate (DBP) is an oil-like chemical compound with the chemical formula C6H4(CO2C4H9)2 and is classified in the phthalate family. This material has a flexible and softening role in the production of plastics and polymers and is one of the important materials in the preparation of plastic products. Dibutyl phthalate is a highly toxic substance and is dangerous to humans and the environment, and its use is prohibited in European and American countries.

This material is used to produce a variety of products in the industry. Diverse uses of dibutyl phthalate are their application in various types of building coatings, PVC compounds, car tire equipment, wires, and cables, production of various types of rubbers for floor coverings and sealants, some therapeutic drugs, etc… DBP is also used in research laboratories.

This chemical is used in perfuming all kinds of cosmetics and due to its good coverage, it prevents nails from breaking or cracking, and it is used in nail polish materials and related solvents.

Although di-butyl phthalate is a toxic phthalate, it is used in the manufacture of children’s toys, food and medicine packaging, personal care products, nail implants, and aftershave sprays. In addition, it is used in the manufacture of aromatic soaps and shampoos.

What do you think about the properties of dibutyl phthalate? Are the properties of dibutyl phthalate suitable for use in various industries? Can this material replace other polymeric materials or polystyrenes? Is it safe to use DBP to produce various plastic products? Ask us your questions in the comments section; You can also share your thoughts on this comprehensive review of the properties of dibutyl phthalate.


What is di-butyl phthalate used for?

This material is used to produce a variety of durable and flexible plastics.

Is the use of dibutyl phthalate prohibited?

Yes! In Europe and the United States, it should not be used to make toys or household appliances. Of course, in Asian countries, this substance is used to produce various products.

How to buy Iran Dibutyl Phthalate?

To buy the best dibutyl phthalate in Iran, contact our experts at PETROPROVIDERS.

Is dibutyl Phthalate toxic?

DBP can be harmful to human health, become toxic in the human body, and cause various diseases such as cancer!

What are the properties of dibutyl phthalate after entering the body?

After entering the body, this substance causes various diseases, including asthma.

Why is dibutyl phthalate toxic?

After entering the body, this substance causes many changes in the hormones of the human body.

How to get rid of di-butyl phthalate?

This chemical may remain in the body for up to 24 hours after entering the body. If the human body's metabolism is normal, this substance will be excreted after 24 hours.

Is dibutyl phthalate absorbed through the skin?

Yes! This chemical can be absorbed through inhalation, injection, and skin.

Which foods have the most phthalates?

In general, phthalates are also found in food; Fish, oils, meats, and dairy products are high in phthalates.

Where is the production of dibutyl phthalate limited?

In European and American countries; This chemical is limited in Europe and the United States and is not used to make toys and home appliances.