Dioctyl Terephthalate

Other Trading Names:

  • Di-2-Ethylhexyl Terephthalate
  • Dioctyl Terephthalate
  • DOTP

CAS Number: 6422-86-2

HS Code: 2917399090

Types of Packaging:

  • 200 kg/drum
Inquiry right-arrow 100,00 $US
Availability: In stock
Dioctyl Terephthalate

Request FREE Quotation



Colorless transparent liquid


≥ 99.6 %


≤ 30 Pt-Co


≤ 0.05 %

Acidity at normal temperature

≤ 0.05 (KOH mg/g)

Refractive index

1.482-1.488 g/cm³ (25℃/D)

Refractive density

0.979-0.989 g/cm³ (25℃)

Volume resistivity

≥ 1.2×10^9 Ω*cm (20℃)

Heavy metals (as Pb)

≤ 10 ppm


≤ 3 ppm

Chemical Description


  • Dioctyl terephthalate, commonly referred to as DOTP, is an organic compound used primarily as a plasticizer.
  • DOTP is a clear, colorless, and odorless liquid at room temperature, making it visually appealing for various applications.
  • The chemical formula of Dioctyl terephthalate is C24H38O4, indicating its composition of carbon, hydrogen, and oxygen atoms.
  • The molecular weight of DOTP is approximately 390.56 g/mol, which reflects its relatively large and complex molecular structure.
  • DOTP is synthesized through the esterification of terephthalic acid with 2-ethylhexanol, resulting in a product that enhances the flexibility and durability of plastic materials.
  • This compound belongs to the family of phthalate-free plasticizers, which are considered safer and more environmentally friendly compared to traditional phthalate plasticizers.
  • One of the primary uses of DOTP is in the production of flexible polyvinyl chloride (PVC) products, such as cables, flooring, and synthetic leather.
  • DOTP is favored in the plastics industry due to its excellent compatibility with PVC and other polymers, leading to high-quality, long-lasting products.
  • The low volatility of DOTP ensures that it remains within the plastic matrix over time, providing consistent performance without significant loss of plasticizer.
  • DOTP has a high resistance to extraction by water and other chemicals, which enhances the durability and longevity of the products it is used in.
  • This plasticizer exhibits good electrical insulation properties, making it suitable for use in the manufacture of electrical cables and wires.
  • DOTP is also used in the automotive industry for making dashboards, door panels, and other interior components, providing both flexibility and resilience.
  • The non-toxic nature of DOTP makes it a preferred choice in applications where human contact is likely, such as medical devices and children's toys.
  • DOTP contributes to the production of eco-friendly products as it does not release harmful byproducts during its lifecycle.
  • The production and use of DOTP align with various regulatory standards, including those set by the European Union's REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) framework.
  • In addition to its primary use as a plasticizer, DOTP can also be found in adhesives, sealants, and coatings, broadening its application spectrum.
  • The thermal stability of DOTP allows it to maintain its performance characteristics under high-temperature conditions, which is beneficial for various industrial applications.
  • DOTP is recognized for its good mechanical properties, such as tensile strength and elongation, which contribute to the robustness of the end products.
  • Despite being a high-performance plasticizer, DOTP is cost-effective, providing a balance of performance and affordability.
  • Environmental and health considerations have driven the increased adoption of DOTP as manufacturers seek alternatives to phthalate plasticizers to meet consumer and regulatory demands.
Write Your Own Review
You're reviewing:Dioctyl Terephthalate

Quote Request Form

Dioctyl Terephthalate