Description

Diisooctyl Phthalate (DIOP) is a high-molecular-weight phthalate ester plasticizer known for its excellent compatibility with a wide range of polymers. This compound is valued for imparting superior flexibility, durability, and low-temperature performance to finished products. It is a critical raw material for manufacturers in the plastics, coatings, and adhesives industries seeking reliable and efficient plasticizing solutions.

Application

• Primary plasticizer for polyvinyl chloride (PVC) in wire and cable insulation, flooring, and synthetic leather.
• Key component in the formulation of flexible PVC compounds for automotive interiors, hoses, and seals.
• Plasticizer for adhesives, sealants, and caulks to enhance workability and final film properties.
• Used in polymer coatings and inks to improve flexibility and adhesion on various substrates.
• Modifier for elastomers and synthetic rubbers to adjust hardness and processing characteristics.
• Functional additive in certain lubricants and greases.

Basic Information

Product Name	Diisooctyl Phthalate
CAS No.	27554-26-3
Molecular Formula	C24H38O4
Molecular Weight	390.56 g/mol
Synonyms	DIOP; Bis(6-methylheptyl) phthalate; Bis(iso-octyl) phthalate; 1,2-Benzenedicarboxylic acid, bis(6-methylheptyl) ester; Phthalic acid, diisooctyl ester; Diisoctyl phthalate; Isooctyl phthalate
EINECS	248-523-5

Quality Control

Our Diisooctyl Phthalate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, color, acidity, and other critical parameters. Certificates of Analysis (COA) documenting these results 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 away from heat sources and incompatible materials. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow oily liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Color (APHA)	≤ 30
Acidity (as Phthalic Acid)	≤ 0.01%
Water Content (KF)	≤ 0.05%
Specific Gravity (20/20°C)	0.980 - 0.986
Refractive Index (20°C)	1.483 - 1.487

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