Description

2-Hydroxyethanesulfonic Acid is a versatile organosulfonic acid derivative characterized by its strong acidity and bifunctional structure. This compound is a critical intermediate and reagent valued for its ability to introduce sulfonic acid groups and act as a catalyst or pH adjuster in demanding chemical processes. It is essential for manufacturers and R&D facilities in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable, high-purity synthetic building blocks.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs requiring sulfonate or taurine-related moieties.
• Chemical Synthesis Catalyst: Utilized as a strong, water-soluble, and recoverable acid catalyst in esterification, alkylation, and other organic reactions.
• Electroplating Additive: Serves as a brightening agent and conductivity enhancer in specialized electroplating baths for metals.
• Biochemical Research: Used as a buffer component and reagent in biochemical studies and protein purification processes.
• Surfactant & Detergent Precursor: Intermediate in the production of specialized anionic surfactants and high-performance detergents.
• Polymer Modification: Employed to introduce sulfonate groups into polymers to enhance hydrophilicity, dyeability, or antistatic properties.

Basic Information

Product Name	2-Hydroxyethanesulfonic Acid
CAS No.	21561-88-6
Molecular Formula	C2H6O4S
Molecular Weight	126.13 g/mol
Synonyms	Isethionic Acid; 2-Hydroxyethane-1-sulfonic Acid; Ethanol Sulfonic Acid; Hydroxyethylsulfonic Acid; 1-Hydroxy-2-ethanesulfonic Acid; 2-Sulfoethanol; HOCH2CH2SO3H
EINECS	244-448-0

Quality Control

Our 2-Hydroxyethanesulfonic Acid is manufactured under a strict quality management system. Each batch is subjected to comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 20 ppm

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