Description

4-Hydroxy-2-Butanesulfonic Acid Sodium Salt is a versatile organic sulfonate salt with significant utility as a chemical intermediate and functional additive. Its value lies in its unique bifunctional structure, combining a hydroxyl group with a sulfonate moiety, which imparts excellent water solubility and surfactant properties. This compound is particularly needed by manufacturers in the pharmaceutical, personal care, and specialty chemical industries for synthesis and formulation applications.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs, leveraging its sulfonate group for enhanced solubility.
• Surfactant & Detergent Formulation: Acts as a mild anionic surfactant or hydrotrope in personal care products, industrial cleaners, and detergent systems.
• Chemical Synthesis Building Block: Serves as a key precursor or reactant in organic synthesis for introducing sulfonate functional groups into target molecules.
• Electroplating & Metal Treatment Additive: Employed in bath formulations to improve wetting, conductivity, and surface finish quality.
• Textile & Leather Processing Aid: Functions as a dyeing assistant, leveling agent, or tanning auxiliary due to its ionic character and solubility.
• Research & Development: Utilized in academic and industrial R&D laboratories for exploring new chemical entities and material science applications.

Basic Information

Product Name	4-Hydroxy-2-Butanesulfonic Acid Sodium Salt
CAS No.	63133-90-4
Molecular Formula	C₄H₉NaO₄S
Molecular Weight	176.16 g/mol
Synonyms	Sodium 4-hydroxy-2-butanesulfonate; 2-Butanesulfonic acid, 4-hydroxy-, sodium salt; 4-Hydroxybutane-2-sulfonic acid sodium salt; Sodium 4-hydroxybutane-2-sulfonate; 4-Hydroxy-2-butylsulfonic acid sodium salt; HBS Sodium Salt
EINECS	Contact for details

Quality Control

Our 4-Hydroxy-2-Butanesulfonic Acid Sodium Salt is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters are available upon request, providing full traceability and compliance with your procurement standards.

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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
pH (5% solution)	6.0 - 8.0

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