Description

1,4-Benzenedicarboxylic Acid, Mono(2-Ethylhexyl) Ester (9Ci) is a specialized monoester derivative of terephthalic acid, serving as a crucial intermediate and functional additive in advanced polymer synthesis. Its unique structure provides a balance of aromatic character and aliphatic chain flexibility, making it valuable for modifying material properties. This compound is primarily sought by manufacturers in the polymer, plasticizer, and specialty chemical industries for developing high-performance materials.

Application

• Polymer Intermediate: Key monomer or co-monomer in the synthesis of specialty polyesters and polyamides, imparting tailored thermal and mechanical properties.
• Plasticizer Precursor: Used in the production of polymeric plasticizers for PVC and other resins to enhance flexibility and durability.
• Adhesive & Sealant Formulation: Acts as a modifying agent to improve adhesion, cohesion, and low-temperature performance in industrial adhesives and sealants.
• Lubricant & Grease Additive: Employed as a synthetic base or performance additive in high-temperature lubricants and functional greases.
• Surface Coating Resins: Incorporated into alkyd, polyester, or polyurethane coating systems to modify film hardness, gloss, and chemical resistance.
• Specialty Chemical Synthesis: Serves as a versatile building block for further chemical reactions to create surfactants, dispersants, or other functional derivatives.

Basic Information

Item	Details
Product Name	1,4-Benzenedicarboxylic Acid, Mono(2-Ethylhexyl) Ester (9Ci)
CAS No.	155603-50-2
Molecular Formula	C16H22O4
Molecular Weight	278.34 g/mol
Synonyms	Mono(2-ethylhexyl) terephthalate; 2-Ethylhexyl hydrogen terephthalate; 4-(2-Ethylhexoxycarbonyl)benzoic acid; Terephthalic acid mono(2-ethylhexyl) ester; Benzoic acid, 4-(carboxy)-, 2-ethylhexyl ester; 1,4-Benzenedicarboxylic acid, mono(2-ethylhexyl) ester; MEHT; Monoethylhexyl terephthalate
EINECS	Contact for details

Quality Control

Our production of 1,4-Benzenedicarboxylic Acid, Mono(2-Ethylhexyl) Ester adheres to a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling. Certificates of Analysis (COA) documenting purity, physical characteristics, and other critical parameters are provided with every shipment to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Acid Value	Contact for details
Moisture (KF)	≤ 0.5%

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