Description

Bis(3,5,5-Trimethylhexyl) Phthalate is a high-molecular-weight, branched-chain diester plasticizer known for its excellent permanence and low volatility. This compound is engineered to provide superior performance in demanding applications where resistance to extraction and migration is critical. It is primarily utilized by formulators in the polymer and specialty chemical industries seeking to enhance the flexibility and durability of high-performance materials.

Application

• Primary plasticizer for high-performance polyvinyl chloride (PVC) applications requiring low volatility and high permanence.
• Key component in the formulation of wire and cable insulation and jacketing, offering excellent electrical properties and long-term stability.
• Used in the production of coated fabrics, synthetic leather, and tarpaulins for enhanced flexibility and weather resistance.
• Plasticizer for adhesives and sealants, improving their workability and final elastomeric properties.
• Functional additive in specialty polymer blends and compounds to modify processing characteristics and end-product performance.
• Used in the manufacture of gaskets, hoses, and other molded rubber goods.

Basic Information

Product Name	Bis(3,5,5-Trimethylhexyl) Phthalate
CAS No.	20548-62-3
Molecular Formula	C26H42O4
Molecular Weight	418.61 g/mol
Synonyms	Di(3,5,5-Trimethylhexyl) Phthalate; Diisononyl Phthalate (DINP) - branched isomer; 1,2-Benzenedicarboxylic acid, bis(3,5,5-trimethylhexyl) ester; Phthalic acid, bis(3,5,5-trimethylhexyl) ester; Palatinol® DINP (branched); Jayflex® DINP (branched); Vestinol® INP (branched); DINP (branched C9)
EINECS	243-921-9

Quality Control

Our Bis(3,5,5-Trimethylhexyl) Phthalate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and physical properties, guaranteeing consistent performance in your formulations. Certificates of Analysis (COA) documenting key parameters 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 strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep container tightly sealed when not in use to minimize moisture absorption and contamination.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous 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)	0.970 - 0.978
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.