Alcoholysis of polyethylene terephthalate to produce dioctyl
In this study, we prepared DOTP from the alcoholysis of polyethylene terephthalate (PET) by using 2-ethyl-1-hexanol (2-EH) as the solvent, and used choline chloride-based deep eutectic solvents (ChCl-based DESs) as the catalysts due to their cheapness, low toxicity and ease of preparation.
Bis(2-ethylhexyl) terephthalate
This colorless viscous liquid is used for softening PVC plastics and is known for chemical similarity to general purpose phthalates such as DEHP and DINP, but without any negative regulatory pressure. It possesses very good plasticizing properties and may be used as a direct replacement for DEHP and DINP in many applications. Production [ edit]
BASF begins production of Palatinol DOTP plasticizer at its Pasadena
HOUSTON, TEXAS, July 18, 2017 – BASF started the production of Palatinol DOTP (dioctyl terephthalate), a general purpose plasticizer, at its Pasadena, Texas facility, with a nameplate capacity of 60,000 metric tons per year. The plant enables BASF to respond to the growing demand for non-ortho-phthalate plasticizers in North America, and strengthens its position as a reliable source for DOTP.
Alcoholysis of poly(ethylene terephthalate) to produce dioctyl
The main liquid product of alcoholysis is DOTP and the DOTP is an important intermediate product which will decompose to produce crystal solid of terephthalic acid (TPA). As for the super-critical 2-EH, although the degradation rate of PET is very fast, the decomposition of DOTP is also very fast, thus, the sub-critical alcoholysis is advantageous to obtain DOTP.
DIOCTYL TEREPHTHALATE (DOTP) Bisley International LLC
DIOCTYL TEREPHTHALATE (DOTP) Chemwatch: 67598-1 Version No: 5.1.6.8 Safety Data Sheet according to OSHA HazCom Standard (2012) requirements Issue Date: 12/02/2025 Print Date: 26/07/2025 S.GHS.USA.EN SECTION 1 Identification Product Identifier Product name DIOCTYL TEREPHTHALATE (DOTP) Chemical Name dioctyl terephthalate
- What is DOTP (Dioctyl Terephthalate)?
- DOTP, Dioctyl Terephthalate (also abbreviated DEHT) is a PVC plasticizer. It is considered safer than other plasticizers due to its excellent toxicological profile and is one of the most important phthalate-free plasticizers in the market. It is the ester of terephthalic acid and 2-ethylhexanol.
- What is DEHT (Dioctyl terephthalate)?
- Bis (2-ethylhexyl) terephthalate commonly abbreviated DEHT (Dioctyl terephthalate or DOTP), is an organic compound with the formula C 6 H 4 (CO 2 C 8 H 17) 2. It is a non- phthalate plasticizer, being the diester of terephthalic acid and the branched-chain 2-ethylhexanol, which is often generically referred to as octyl.
- What is a standard state of terephthalate?
- Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Bis (2-ethylhexyl) terephthalate commonly abbreviated DEHT (Dioctyl terephthalate or DOTP), is an organic compound with the formula C 6 H 4 (CO 2 C 8 H 17) 2.
- What is the difference between a plasticizer DOP and a DOTP?
- Compared with the traditional plasticizer DOP, DOTP has less volatility loss and higher stability in long-term use, reducing material aging problems caused by plasticizer migration. High volume resistivity (up to 1×10⁹Ω-m or more), especially suitable for wire and cable insulation materials to ensure electrical safety.
- What is DOTP used for?
- DOTP is the plasticizer of choice for high-temperature resistant cables (e.g., 70°C class cables), and is widely used as a sheathing material for power transmission and communication cables due to its low volatility and high electrical insulation properties.
- Does DOTP contain phthalates?
- DOTP does not contain phthalates, in line with the EU REACH and other international regulations on the restriction of hazardous substances, safer for human beings and the environment, especially for food packaging, medical devices and other sensitive areas.
