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    Dioctyl Terephthalate (DOTP) (99,5%) - Taiwan

    Dioctyl Terephthalate (DOTP) (99,5%) - Taiwan in Tradeasia

    IUPAC Name

    Bis(2-ethylhexyl)benzene-1,4-dicarboxylate

    Cas Number

    6422-86-2

    HS Code

    2917.39.90

    Formula

    C24H38O4

    Basic Info

    Appearance

    Colorless, Clear, Oily Liquid

    Common Names

    Di(ethylhexyl) Terephthalate;1,4-Benzenedicarboxylic Acid Bis(2-ethyhexyl) Ester

    Packaging

    200 Kg Metal Drum

    Brief Overview

    Dioctyl terephthalate (DOTP) is a non-phthalate plasticizer that is commonly used in the production of various plastic and polymer products. It is a clear, colorless liquid that is highly resistant to heat and has a high degree of compatibility with PVC, making it an ideal replacement for traditional phthalate plasticizers. Unlike some phthalate plasticizers, DOTP is not considered a reproductive or developmental toxin and has a low potential for acute toxicity. As a result, it has been approved for use in a variety of food contact applications and medical devices.

    Manufacturing Process

    1. Esterification: The first step in the process involves the esterification of terephthalic acid with 2-ethylhexanol. This reaction is typically carried out in the presence of a catalyst, such as titanium or antimony, and produces bis(2-ethylhexyl) terephthalate (DEHT).

    2. Transesterification: The DEHT is then subjected to transesterification with 2-ethylhexanol to produce DOTP. This reaction is typically carried out in the presence of a catalyst, such as zinc or calcium, and involves the exchange of one of the ethylhexyl groups in DEHT with an ethylhexyl group from 2-ethylhexanol.

    3. Purification: The DOTP is then purified to remove any remaining impurities, such as catalyst residues and unreacted starting materials. This is typically done through a combination of processes, including distillation, filtration, and washing.

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