Description

1,3-Benzenedicarboxylic Acid, Bis(2-Hydroxyethyl) Ester is a versatile diester derivative of isophthalic acid, valued for its dual functionality as both a diol and a diester. This compound serves as a crucial reactive intermediate and plasticizer in the synthesis of high-performance polymers and specialty chemicals. It is essential for manufacturers in the polymer, coatings, and adhesives industries seeking to modify resin properties and enhance product performance.

Application

• Polymer Synthesis: A key monomer for producing unsaturated polyester resins (UPR) and polyurethanes (PU), imparting flexibility and chemical resistance.
• Plasticizer: Used as a specialty plasticizer for PVC and other polymers to improve low-temperature flexibility and durability.
• Coating Resins: Incorporated into alkyd and polyester coating formulations to enhance adhesion, gloss, and weatherability.
• Adhesive & Sealant Formulations: Acts as a reactive diluent and modifier to adjust viscosity and improve bond strength.
• Intermediate for Chemical Synthesis: Serves as a building block for further chemical reactions to create more complex esters, surfactants, or cross-linking agents.
• Fiber Treatment: Used in the surface treatment of synthetic fibers to improve dyeability and moisture management.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Bis(2-Hydroxyethyl) Ester
CAS No.	3644-99-3
Molecular Formula	C12H14O6
Molecular Weight	254.24 g/mol
Synonyms	Bis(2-hydroxyethyl) isophthalate; Di(2-hydroxyethyl) isophthalate; Isophthalic acid bis(2-hydroxyethyl) ester; Ethylene glycol isophthalate; 2-Hydroxyethyl isophthalate; HEIP; DHEI; 1,3-Benzenedicarboxylic acid, 1,3-bis(2-hydroxyethyl) ester
EINECS	222-882-1

Quality Control

Our 1,3-Benzenedicarboxylic Acid, Bis(2-Hydroxyethyl) Ester is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. 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, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Acid Value	≤ 1.0 mg KOH/g
Hydroxyl Value	Contact for details

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