Description

Diethyl Isophthalate is a high-purity diester of isophthalic acid, serving as a versatile and valuable chemical intermediate. Its primary commercial value lies in its role as a key monomer for the synthesis of specialized polymers and as a precursor for fine chemicals. This product is essential for manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking reliable, high-quality raw materials for their production processes.

Application

• Polymer Synthesis: A crucial monomer for producing specialty polyesters, polyamides, and other high-performance polymers.
• Plasticizer Production: Used as an intermediate in the manufacture of specific plasticizers for PVC and other polymers.
• Pharmaceutical Intermediates: Serves as a building block in the synthesis of active pharmaceutical ingredients (APIs) and other drug components.
• Organic Synthesis: A valuable reagent and precursor in various organic reactions for creating complex molecules.
• Liquid Crystal Polymers (LCPs): Used in the production of monomers for high-temperature and high-performance LCPs.
• Coating and Resin Formulations: Incorporated into specialty coatings, adhesives, and resin systems to modify properties.
• Flavor and Fragrance Industry: Acts as an intermediate for the synthesis of certain aroma chemicals.
• Research & Development: Employed in laboratory settings for chemical research and development of new materials.

Basic Information

Item	Detail
Product Name	Diethyl Isophthalate
CAS No.	636-53-3
Molecular Formula	C12H14O4
Molecular Weight	222.24 g/mol
Synonyms	Diethyl 1,3-Benzenedicarboxylate; Isophthalic Acid Diethyl Ester; Diethyl Isophthalate; Diethyl Benzene-1,3-dicarboxylate; DEIP; Ethyl Isophthalate; 3-Carbethoxybenzoic Acid Ethyl Ester
EINECS	211-279-6

Quality Control

Our Diethyl Isophthalate is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical testing, and a Certificate of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles is available for every shipment. Our quality commitment aligns with industrial and fine chemical standards to meet the specific requirements of our global B2B clients.

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 liquid
Identification (IR)	Conforms
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Acidity (as Isophthalic Acid)	≤ 0.1%
Specific Gravity (20°C)	1.115 - 1.125
Refractive Index (20°C)	1.505 - 1.515

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