Description

Bis(3-Ethylheptyl) Phthalate is a high-molecular-weight diester plasticizer derived from phthalic anhydride and 3-ethylheptanol. This compound is valued for its excellent compatibility with a wide range of polymers, providing enhanced flexibility, durability, and low-temperature performance to finished products. It is primarily sought by manufacturers in the plastics, polymer, and specialty chemical industries for formulating high-performance PVC, synthetic rubbers, and other elastomeric materials.

Application

• Primary Plasticizer for PVC: Imparts superior flexibility, elongation, and low-temperature properties to PVC films, sheets, cables, and flooring.
• Synthetic Rubber Compounding: Used as a processing aid and softener in nitrile rubber (NBR), SBR, and other elastomers to improve workability and final product resilience.
• Specialty Adhesives and Sealants: Acts as a non-volatile plasticizer to enhance the tack, adhesion, and flexibility of polymer-based adhesive formulations.
• Coating and Ink Resins: Serves as a polymeric modifier in certain coating systems to improve film formation and flexibility.
• Wire and Cable Insulation: Provides critical electrical insulation properties and long-term stability in plasticized compounds for electrical applications.
• Gasket and Hose Manufacturing: Used in formulations requiring resistance to extraction and migration, ensuring product longevity.

Basic Information

Product Name	Bis(3-Ethylheptyl) Phthalate
CAS No.	85391-51-1
Molecular Formula	C26H42O4
Molecular Weight	418.61 g/mol
Synonyms	1,2-Benzenedicarboxylic acid, bis(3-ethylheptyl) ester; Di(3-ethylheptyl) phthalate; Phthalic acid, bis(3-ethylheptyl) ester; 3-Ethylheptyl phthalate; DEHP (3-Ethylheptyl isomer); Plasticizer 3-EH; Bis(3-ethylheptyl) 1,2-benzenedicarboxylate
EINECS	Contact for details

Quality Control

Our Bis(3-Ethylheptyl) Phthalate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, color, acidity, and specific gravity are available upon request to support your quality assurance protocols.

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, strong acids, and heat sources to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Acidity (as Phthalic Acid)	≤ 0.01%
Color (APHA)	≤ 30
Water Content (KF)	≤ 0.05%
Specific Gravity (20/20°C)	0.970 - 0.980
Refractive Index (n20D)	1.483 - 1.487

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