Dioctyl Terephthalate (DOTP)

Dioctyl Terephthalate (DOTP), also known as Bis(2-ethylhexyl) Terephthalate, Di(2-ethylhexyl) Terephthalate, DEHT, and Terephthalic Acid Bis(2-ethylhexyl) Ester, is a high-performance non-phthalate plasticizer widely used in the production of flexible PVC and other polymer-based materials. DOTP is considered an environmentally preferred alternative to traditional phthalate plasticizers such as DOP (Dioctyl Phthalate) and DINP due to its excellent safety profile, low volatility, and outstanding compatibility with PVC resins. This clear, colorless, and odorless liquid plasticizer is produced through the esterification reaction of purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) with 2-ethylhexanol under controlled industrial conditions, followed by purification and quality filtration processes. Commercial DOTP is available in different grades including general industrial grade, high-purity grade, low-volatility grade, and specialty grades designed for sensitive applications such as food-contact materials and medical products.

DOTP plasticizer is mainly supplied in bulk quantities, tank containers, ISO tanks, drums, and IBC containers depending on export requirements. Industrial grade DOTP is commonly used for flexible PVC products such as cables, wires, flooring, artificial leather, PVC films, sheets, profiles, and construction materials where high flexibility and durability are required. High-purity DOTP grades are preferred for applications requiring excellent color stability, low odor, and strict quality control, including medical tubing, packaging films, toys, and specialized polymer products. Low-volatility DOTP grades provide enhanced resistance against migration, evaporation, and aging, making them suitable for automotive interiors, electrical insulation, and long-life PVC applications. Due to its excellent electrical properties, thermal stability, and resistance to extraction, DOTP is also widely used in PVC compounds, sealants, coatings, adhesives, and elastomer formulations.

The major advantages of Dioctyl Terephthalate (DOTP) include superior plasticizing efficiency, excellent compatibility with PVC, high flexibility retention, low migration tendency, good heat resistance, strong electrical insulation properties, and improved environmental performance compared with conventional phthalate-based plasticizers. DOTP provides excellent mechanical properties to finished PVC products, including softness, elongation, durability, and resistance to weathering and chemicals. It is widely recognized as a reliable non-phthalate plasticizer for global markets due to its compliance with modern environmental regulations and increasing demand for safer polymer additives. Export-quality DOTP is manufactured according to international standards with controlled viscosity, purity, color, and acid value to meet the requirements of various industries including construction, automotive, electrical, consumer goods, and industrial manufacturing.

Specification	Typical Value
Product Name	Dioctyl Terephthalate (DOTP)
Chemical Name	Bis(2-ethylhexyl) Terephthalate
Alternative Names	DEHT, DOTP Plasticizer, Terephthalic Acid Ester
CAS Number	6422-86-2
Appearance	Clear Colorless Liquid
Purity	≥ 99%
Molecular Formula	C24H38O4
Molecular Weight	390.56 g/mol
Acid Value	≤ 0.05 mg KOH/g
Color (Pt-Co)	≤ 30
Specific Gravity (20°C)	0.981–0.986 g/cm³
Application	PVC Plasticizer, Polymer Additive

IF YOU ARE WILLING TO BUY DOTP FROM VERIFIED IRANIAN SUPPLIERS, PLEASE SCROLL DOWN AND SUBMIT YOUR REQUEST.

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FAQ Dioctyl Terephthalate (DOTP)

Dioctyl Terephthalate (DOTP) is mainly used as a non-phthalate plasticizer for flexible PVC products including cables, flooring, films, artificial leather, automotive parts, coatings, and medical applications.

DOTP is commercially known as Dioctyl Terephthalate, Bis(2-ethylhexyl) Terephthalate, Di(2-ethylhexyl) Terephthalate, DEHT, and Terephthalic Acid Bis(2-ethylhexyl) Ester.

DOTP is available in industrial grade, high-purity grade, low-volatility grade, and specialty grades for applications requiring improved safety, low migration, high stability, and superior performance.

DOTP provides better environmental performance, lower migration, lower volatility, excellent flexibility, good heat resistance, and is considered a safer alternative to traditional phthalate plasticizers.

You can find a suitable and reliable DOTP supplier in Iran through Irancorps, which helps international buyers connect with verified Iranian manufacturers and exporters according to their required specifications and quantities.

DOTP is commonly exported in bulk tankers, ISO tanks, flexitanks, drums, and IBC containers according to customer requirements and international shipping standards.