Bis(2-ethylhexyl) terephthalate, also known as DOTP, is a plasticizer that has found increasing use due to its superior properties over DOP.
DOTP is a viscous, colorless liquid with a characteristic and mild odor. Its specific gravity is 0.984 g/mL, its melting point is -48°C, and its boiling point is 390°C.
DOTP is insoluble in water and soluble in nonpolar solvents and oils.
| Chemical formula: | C24H38O4 |
| Appearance: | A colorless, clear liquid with a faint odor. |
| Solvent in water: | Insoluble |
| Refractive index: | 1.49 |
| Solvent in organic solvents: | Ethanol, acetone, esters, aromatic hydrocarbons |
| Boiling point: | 400°C |
| Melting point: | -48.9 degrees Celsius |
| Density: | 0.986 g/ml |
In all European countries, DOTP oil is used instead of DOP oil in the production of products that are in direct contact with humans, such as toys, medical equipment and supplies, artificial leather, household plastic equipment, hoses, etc. The following are some of the advantages of DOTP oil:
DOTP oil has a different chemical composition than other plasticizers, and due to this composition in the symmetrical structure and its lower migration from plastic, the products produced by them have higher resistance and strength than DOP oil.
DOTP oil has a longer shelf life than other plasticizers due to its lower volatility, and the reduction in plasticization in PVC processability is less than other plasticizers.
It has higher tensile strength and resistance to fluctuations and temperature transfer, so this product is used in the production of hoses and shoes.
DOTP oil has greater flexibility than other materials, which has led to a reduction in the fragility of products manufactured at low temperatures and has greater resistance to cold.
This product has inherent softening and lubricating properties, which has led to the production of plastisol in a shorter time with energy savings.
The flash point of DOTP oil is higher than other materials and is close to 51 degrees Celsius. Therefore, it is a good option for producing thermal insulation, cables.
Uses of DOTP oil
Among the most important uses and applications of DOTP oil are the following.
DOTP oil is usually used as a softener and plasticizer in the production of polymer products such as PVC equipment and pipes, such as cable manufacturing, toy manufacturing, flooring and wall coverings, etc.
In the medical industry, DOTP oil is used to maintain the quality of blood components in PVC bags, in the production of blood bags and medical tubes.
DOTP oil is also used in the production of home appliances such as furniture, bathtubs, sports equipment, etc.
DOTP oil is widely used in the paint industry and the production of adhesives and sealants.
This product can also be used in the textile industry, fabric and leather production, and printing ink.
DOTP is used in the rubber industry as a softener for nitrile-butadiene rubber, chloroprene rubber, and isobutylene-isoprene rubber.
DOTP oil is also compatible with acetate resins, cellulose butyrate, cellulose nitrate, poly(methyl methacrylate), polystyrene, poly(vinyl butyral) and poly(vinyl chloride) and can be used in various industries, of which we have mentioned only some of the uses of DOTP oil in this section.
Dioctyl terephthalate oil is used to manufacture various goods such as sheets, fabrics, flooring, wires and cables, films, wall coverings, etc. In addition to being used in various industries such as soft PVC sheets, various types of coatings such as wires and cables, various types of PVC wall coverings, it is also used in the production of various household appliances, toys, food packaging containers, gloves, and all items that are of great importance to health and environmental issues.
Dioctyl terephthalate oil should be stored in closed metal barrels, at a temperature of 5-35 degrees Celsius, away from sunlight.
Be sure to pay close attention to the temperature of the environment where you store dioctyl terephthalate.
Dioctyl terephthalate should be stored in a well-ventilated area, away from sunlight and sources of fire.
Dioctyl terephthalate has an expiration date of approximately 2 years.
