Description

1,3-Benzenedicarboxylic Acid, Bis(3-Methylbutyl) Ester is a high-purity diester of isophthalic acid, valued for its role as a specialized plasticizer and intermediate. This compound is engineered to provide enhanced solvency and compatibility in high-performance polymer systems. It is primarily sought by formulators and manufacturers in the plastics, coatings, and specialty chemical industries for applications requiring tailored physical properties and stability.

Application

• Specialty Plasticizer: Used as a co-plasticizer in PVC, polyurethanes, and other polymer formulations to improve flexibility, low-temperature performance, and processing characteristics.
• Polymer Intermediate: Serves as a key monomer or building block in the synthesis of specialized polyesters, polyamides, and other condensation polymers.
• Coating Additive: Functions as a coalescing agent or plasticizer in high-performance industrial and automotive coatings to enhance film formation, adhesion, and durability.
• Adhesive & Sealant Formulation: Imparts flexibility and reduces viscosity in adhesive and sealant systems, improving application properties and final product performance.
• Lubricant & Grease Component: Employed as a synthetic base or additive in specialty lubricants and greases for its thermal stability and solvency power.
• Chemical Synthesis: Acts as a versatile intermediate in organic synthesis for pharmaceuticals, agrochemicals, and other fine chemicals.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Bis(3-Methylbutyl) Ester
CAS No.	1528-63-8
Molecular Formula	C20H30O4
Molecular Weight	334.45 g/mol
Synonyms	Diisoamyl Isophthalate; Bis(3-methylbutyl) Benzene-1,3-dicarboxylate; Isophthalic Acid Diisoamyl Ester; DIAP; Di(isoamyl) Isophthalate; 1,3-Benzenedicarboxylic Acid Diisoamyl Ester; Benzene-1,3-dicarboxylic Acid Bis(3-methylbutyl) Ester
EINECS	219-200-1

Quality Control

Our 1,3-Benzenedicarboxylic Acid, Bis(3-Methylbutyl) Ester is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (typically 15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 98.0%
Acid Value	≤ 1.0 mg KOH/g
Water Content (KF)	≤ 0.1%
Specific Gravity (20°C)	0.980 - 1.010
Refractive Index (20°C)	1.480 - 1.500

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