Dioctyl terephthalate DOTP
CAS Number: 6422-86-2
Chemical Formula: C₂₄H₃₈O₄
Synonyms: 168 plasticizer, 168-ca plasticizer, BIS(2-ETHYLHEXYL)-1,4-BENZENEDICARBOXYLATE, PA-6 Plasticizer adhesive, di-(2-ethylhexyl)terephthalate, DOTP
Appearance: Colorless liquid
HS Code: 29173990
Minimum Order Quantity (MOQ): 1 FCL (Full Container Load)
Product Description
Dioctyl terephthalate (DOTP) is a high-performance plasticizer widely used in the processing of PVC and other polymeric materials. It is an ester formed by the reaction of terephthalic acid and 2-ethylhexanol. This product is a clear, colorless liquid with a mild odor and is insoluble in water. DOTP offers outstanding heat resistance, durability, and clarity, making it a reliable direct substitute for DOP and DINP in many applications. It is compatible with calendering, extrusion, and injection molding processes.
Chemical Properties
| Parameter | Specification |
| Melting point | -48 °C |
| Boiling point | 400 °C (lit.) |
| Density | 0.986 g/mL at 25 °C (lit.) |
| Vapor pressure | 1 mm Hg at 217 °C |
| Refractive index | n₂₀/D 1.49 (lit.) |
| Flash point | 230 °F |
| Storage temperature | 2–8 °C |
| Solubility | Slightly soluble in aqueous base |
| Form | Liquid |
| Color | Clear colorless |
| Water solubility | Insoluble |
| Stability | Hygroscopic |
| LogP | 8.34 at 20 °C |
| CAS Database Reference | 6422-86-2 |
| EPA Substance Registry | Bis(2-ethylhexyl) terephthalate (6422-86-2) |
Safety Information
| Item | Details |
| Safety Statements | 24/25 |
| WGK Germany | 1 |
| RTECS | WZ0883500 |
| HS Code | 29173990 |
| Hazardous Substances Data | 6422-86-2 |
Main Applications
Used as a primary plasticizer for PVC and related polymer processing
Suitable for film blowing, calendering, extrusion, and injection molding
Can form composite blends with PANI and EDMA to produce conductive films
Applied as a plasticizer in PVCbased formulations for artificial vascular plaque research
Used in soft PVC products requiring high thermal stability and transparency
Delivery Time
Inventory orders: 2–3 working days
New production orders: 7–10 working days
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