Description

Sodium Bis(2-Hydroxyethyl) 5-Sulphonatoisophthalate is a high-purity, water-soluble organic salt primarily used as a key monomer and functional additive. This compound matters for its ability to introduce sulfonate and hydroxyl functional groups, enhancing hydrophilicity, dyeability, and adhesion in polymer systems. Industries such as specialty polymers, textile auxiliaries, and advanced material coatings need it for developing products with improved performance characteristics. Its consistent quality is critical for ensuring batch-to-batch reliability in sensitive manufacturing processes.

Application

• Polymer Synthesis: Acts as a sulfonated monomer for producing water-soluble or dispersible polyesters, polyamides, and epoxy resins.
• Textile Chemical Auxiliaries: Serves as a key component in dyeing and finishing agents to improve color fastness and fabric handle.
• Coating and Ink Formulations: Used to enhance the dispersion stability, adhesion, and flow properties of water-based coatings and inks.
• Adhesive and Sealant Production: Incorporated to modify rheology and improve the bonding performance of aqueous adhesive systems.
• Paper and Pulp Chemicals: Functions as a dispersant and retention aid in papermaking processes.
• Personal Care and Detergents: Utilized as a mild surfactant or viscosity modifier in specialized formulations.

Basic Information

Product Name	Sodium Bis(2-Hydroxyethyl) 5-Sulphonatoisophthalate
CAS No.	24019-46-3
Molecular Formula	C12H13NaO9S
Molecular Weight	356.28 g/mol
Synonyms	5-Sulfoisophthalic Acid Bis(2-hydroxyethyl) Ester Sodium Salt; Sodium 5-Sulfoisophthalic Acid Diethylene Glycol Ester; Bis(2-hydroxyethyl) 5-Sulfoisophthalate Sodium Salt; 5-Sulfoisophthalic Acid Di(2-hydroxyethyl) Ester Sodium Salt; SIP Ester Sodium Salt; Sodium Hydroxyethyl Sulfoisophthalate; 1,3-Benzenedicarboxylic Acid, 5-Sulfo-, 1,3-Bis(2-hydroxyethyl) Ester, Sodium Salt
EINECS	Contact for details

Quality Control

Our Sodium Bis(2-Hydroxyethyl) 5-Sulphonatoisophthalate is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing, including assay, impurity profiling, and physical characterization, to ensure it meets precise specifications for industrial and specialty applications. Certificates of Analysis (COA) documenting purity, identity, and 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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% Solution)	6.0 - 8.0
Sodium Content	Contact for details
Sulfonate Content	Contact for details
Residue on Ignition	Contact for details

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