DOTP PLASTICIZER – DIOCTYL TEREPHTHALATE

1. Product Description

DOTP (Dioctyl Terephthalate) is a modern plasticizer widely used as a replacement for traditional phthalate plasticizers, thanks to its high performance and excellent compatibility with various polymers.

Chemical Formula: C₂₄H₃₈O₄
CAS Number: 6422-86-2

DOTP is produced either by esterification of terephthalic acid with 2-ethylhexanol or by transesterification of dimethyl terephthalate with 2-ethylhexanol.
It is typically a clear to slightly oily, nearly colorless liquid, and is insoluble in water.

DIOCTYL TEREPHTHALATE

2. Key Features

Excellent compatibility with PVC and other flexible polymers; can replace DOP and DINP in many applications
Good thermal stability and low volatility, suitable for long-term durable products
Provides good low-temperature flexibility, ideal for outdoor products, cables, and films
Considered a non-phthalate plasticizer, better meeting environmental regulations such as REACH and RoHS

3. Applications

DOTP is widely used in plastic and rubber manufacturing, including:

Flexible PVC: electrical wires and cables, insulated tubing, vinyl flooring, synthetic leather
Films, sheets, and vinyl coatings: for construction and flexible packaging
Outdoor equipment and automotive components: due to excellent heat resistance and durability
Other industrial products: rubber, insulating materials, and waterproof membranes

4. Selection & Usage Guidelines

When using DOTP in your formulations, consider the following:

Select the appropriate base polymer (e.g., PVC, synthetic rubber) and ensure compatibility with DOTP
Evaluate required flexibility, softness, and service temperature range
Check product specifications such as purity (typically ≥ 99.0%), acid value, color, and moisture content
- Example: Ester content ≥ 99.0%
Store properly in a dry place, away from strong light, with containers tightly sealed
Use appropriate dosage levels in formulations to achieve optimal performance

5. Typical Technical Data

(Representative values; actual data may vary by grade)

Density: ~ 0.981 – 0.987 g/cm³ at 20 °C
Color (APHA): max. ~ 25 – 30 Hazen
Ester content: ≥ 99.0% (≥ 99.5% in some grades)
Flash point: > 210 °C

6. Why Choose Our DOTP

High-purity DOTP compliant with industrial and environmental standards (non-phthalate)
Suitable for a wide range of applications: flexible PVC, films, wires & cables, vinyl flooring, and construction materials
Technical support including material selection, compatibility testing, and sample trials
Standardized packaging and reliable delivery to ensure consistent quality in use