Description

Diisobutyl Terephthalate is a high-purity diester of terephthalic acid, valued for its role as a specialized plasticizer and chemical intermediate. This compound is engineered to offer enhanced compatibility and performance characteristics in demanding polymer formulations. It is primarily utilized by manufacturers in the plastics, coatings, and specialty chemical industries seeking to modify material properties such as flexibility, durability, and processability.

Application

• Primary plasticizer for high-performance polyvinyl chloride (PVC) and other polymer systems requiring low volatility and good permanence.
• Key intermediate in the synthesis of specialty polyesters and polymeric materials.
• Modifier for coatings and adhesives to improve film flexibility and adhesion.
• Additive in sealants and caulks to enhance elasticity and long-term stability.
• Solvent and carrier for high-value pigments and dyes in specialty ink formulations.
• Component in the production of specialty lubricants and functional fluids.

Basic Information

Product Name	Diisobutyl Terephthalate
CAS No.	18699-48-4
Molecular Formula	C16H22O4
Molecular Weight	278.34 g/mol
Synonyms	1,4-Benzenedicarboxylic acid, 1,4-bis(2-methylpropyl) ester; Bis(2-methylpropyl) benzene-1,4-dicarboxylate; DIBT; Diisobutyl 1,4-benzenedicarboxylate; Terephthalic acid diisobutyl ester; Diisobutyl ester of terephthalic acid
EINECS	242-500-5

Quality Control

Our Diisobutyl Terephthalate 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. A comprehensive Certificate of Analysis (COA) documenting key parameters is provided with every shipment to guarantee consistency and 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
Assay (GC)	≥ 98.5%
Acidity (as Terephthalic Acid)	≤ 0.05%
Water Content (KF)	≤ 0.1%
Color (APHA)	≤ 50
Specific Gravity (20°C)	1.040 - 1.060
Refractive Index (20°C)	1.490 - 1.500

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