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Dioctyl Terephthalate (DOTP) (99,5%) - Taiwan
- Origin
- : Taiwan, Turkey
- CAS Number
- : 6422-86-2
- HS Code
- : 2917.39.90
Basic Info
- IUPAC Name
- : bis(2-ethylhexyl) benzene-1,4-dicarboxylate
- Molecular Formula
- : C24H38O4
- Molecular Weight (g/mol)
- : 390.5700
- Synonyms & Trade Names
- : DOTP; Dioctyl terephthalate; Plasthall DOTP; DOP-T
- Purity / Assay (%)
- : 99.5% min
- Grade / Quality Level
- : Technical Grade
- Physical Form
- : Liquid
- Concentration
- : Pure substance
- Appearance / Color
- : Clear to slightly colored liquid
- Odor
- : Almost odorless
- Melting Point (°C)
- : -50.0000
- Boiling Point (°C)
- : >300
- Density (g/cm³)
- : 0.9780
- Solubility in Water
- : Insoluble in water
- UN Number
- : Not applicable
- H-Statements
- : None
- P-Statements
- : P260
- REACH Status
- : Registered
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 10
- Storage Conditions
- : Cool, dry place
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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
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).
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.
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.