Description

Dioctyl Terephthalate CAS NO 4654-26-6 is a high-molecular-weight diester plasticizer derived from terephthalic acid. This compound is valued for its excellent permanence, low volatility, and superior performance in demanding polymer applications. It is a critical material for manufacturers in the plastics, wire and cable, and automotive industries seeking durable and efficient plasticizing solutions.

Application

• Primary plasticizer for polyvinyl chloride (PVC) in wire and cable insulation and jacketing.
• Key component in the formulation of high-performance synthetic leather and coated fabrics.
• Used in the production of automotive interior parts, such as dashboards and door panels, for enhanced flexibility and longevity.
• Plasticizer for adhesives, sealants, and polymer gels requiring low migration properties.
• Employed in the manufacture of flexible films and sheets for industrial and packaging applications.
• Used as a processing aid and secondary plasticizer in various engineering polymer blends.

Basic Information

Product Name	Dioctyl Terephthalate
CAS No.	4654-26-6
Molecular Formula	C24H38O4
Molecular Weight	390.56 g/mol
Synonyms	DOTP; Bis(2-ethylhexyl) terephthalate; DEHT; 1,4-Benzenedicarboxylic acid, bis(2-ethylhexyl) ester; Terephthalic acid, dioctyl ester; Dioctyl 1,4-benzenedicarboxylate; BEHT; Octyl terephthalate
EINECS	225-096-8

Quality Control

Our Dioctyl Terephthalate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and physical properties. Certificates of Analysis (COA) are provided to guarantee consistency, reliability, and compliance with relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Color (APHA)	≤ 30
Acidity (as Terephthalic Acid)	≤ 0.01%
Water Content (KF)	≤ 0.05%
Specific Gravity (20°C)	0.983 - 0.987
Refractive Index (20°C)	1.486 - 1.490

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.