Description

1,3-Benzenedicarboxylic Acid, 5-Sulfo-, Monosodium Salt, Polymer With 1,3-Benzenedicarboxylic Acid, 1,2-Ethanediol And 2,2'-Oxybis[Ethanol] is a high-performance, sulfonated aromatic polyester polyol. This specialized polymer is engineered to provide enhanced water solubility and ionic character, making it a valuable functional additive and intermediate. It is primarily sought after by formulators in the coatings, adhesives, and specialty polymer industries seeking to modify rheology, improve dispersion, or introduce anionic functionality into their systems.

Application

• Water-Reducing Superplasticizer: A key functional monomer or intermediate in the synthesis of polycarboxylate ether (PCE) superplasticizers for high-performance concrete.
• Dispersing Agent: Used in the formulation of pigments, dyes, and ceramic powders to improve stability and prevent agglomeration in aqueous systems.
• Polymer Modification: Incorporated into polyester or polyurethane resins to enhance hydrophilicity, dyeability, or antistatic properties.
• Ion-Exchange Resin Precursor: Serves as a monomer for producing specialty ion-exchange membranes or resins with sulfonic acid groups.
• Textile Auxiliaries: Utilized in the production of sizing agents, finishing chemicals, or dyeing assistants for synthetic fibers.
• Adhesive & Sealant Formulation: Acts as a rheology modifier or compatibility enhancer in water-based adhesive systems.

Basic Information

Item	Detail
Product Name	1,3-Benzenedicarboxylic Acid, 5-Sulfo-, Monosodium Salt, Polymer With 1,3-Benzenedicarboxylic Acid, 1,2-Ethanediol And 2,2'-Oxybis[Ethanol]
CAS No.	61910-89-2
Molecular Formula	(C8H4NaO7S · C8H6O4 · C2H6O2 · C4H10O3)n
Molecular Weight	Polymer - Contact for details
Synonyms	5-Sulfoisophthalic Acid Monosodium Salt Polyester Polyol; Sulfonated Polyester Polyol; Poly(oxy-1,2-ethanediyloxycarbonyl-5-sulfo-1,3-benzenedicarbonyloxy-1,2-ethanediyloxycarbonyl-1,3-benzenedicarbonyl); Polyethylene Glycol 5-Sodiosulfoisophthalate-Isophthalate Copolymer; PES-SO3Na; Water-soluble Sulfonated Polyester; CAS 61910-89-2
EINECS	Contact for details

Quality Control

Our production of this sulfonated polyester polyol adheres to strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent performance as a polymer intermediate. Key parameters monitored include acid value, hydroxyl value, sulfonation degree, and molecular weight distribution. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and R&D processes.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Off-white to light tan powder or granules
Identification (IR)	Conforms to structure
Acid Value	Contact for details
Hydroxyl Value	Contact for details
Sulfur Content	Contact for details
Moisture (Karl Fischer)	≤ 3.0%
pH (in solution)	6.0 - 8.0

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