Description

Bis(3,5,5-Trimethylhexyl) Benzene-1,2-Dicarboxylate is a high-purity, branched-chain diester plasticizer derived from phthalic acid. This compound is valued for its excellent compatibility with a wide range of polymers, providing enhanced flexibility, low-temperature performance, and durability. It is a critical raw material for manufacturers in the plastics, coatings, and specialty chemical industries seeking reliable performance additives for demanding applications.

Application

• Primary plasticizer for flexible PVC (polyvinyl chloride) products such as cables, hoses, and films.
• Performance additive in synthetic rubbers and elastomers to improve processability and cold flexibility.
• Coalescing agent and plasticizer in industrial and architectural coatings, adhesives, and sealants.
• Functional fluid and lubricant additive to modify viscosity and thermal properties.
• Intermediate in the synthesis of more complex specialty esters and polymer modifiers.
• Component in caulks and plastisols requiring low volatility and good permanence.

Basic Information

Product Name	Bis(3,5,5-Trimethylhexyl) Benzene-1,2-Dicarboxylate
CAS No.	58033-90-2
Molecular Formula	C28H46O4
Molecular Weight	446.67 g/mol
Synonyms	Di(3,5,5-Trimethylhexyl) Phthalate; Diisononyl Phthalate (DINP) isomer; 1,2-Benzenedicarboxylic Acid, Bis(3,5,5-Trimethylhexyl) Ester; Phthalic Acid, Di(3,5,5-Trimethylhexyl) Ester; 3,5,5-Trimethylhexyl Phthalate; Iso-C9 Phthalate; DINP (C9); Jayflex DINP
EINECS	Contact for details

Quality Control

Our Bis(3,5,5-Trimethylhexyl) Benzene-1,2-Dicarboxylate 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) documenting assay, identity, and key impurity profiles 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 strong bases.

Specification

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