Description

Sodium 4-Hydroxybenzenesulfonate is the sodium salt of p-phenolsulfonic acid, a key organic intermediate and functional additive. This compound is valued for its water-solubility and ability to act as a dispersing, coupling, or stabilizing agent in various chemical processes. It is essential for manufacturers in the dye, pharmaceutical, and polymer industries seeking to enhance product performance and process efficiency. Our supply ensures consistent high purity and reliable availability for global industrial applications.

Application

• Dye and Pigment Intermediate: Acts as a coupling agent and solubilizer in the synthesis of azo dyes and other colorants.
• Pharmaceutical Synthesis: Serves as a building block or salt-forming agent in the production of certain APIs and fine chemicals.
• Polymer Industry: Used as a monomer or additive in the production of specialty polymers, phenolic resins, and ion-exchange materials.
• Electroplating Additive: Functions as a brightener or stabilizer in electroplating baths to improve finish quality.
• Chemical Intermediate: A versatile precursor for further sulfonation or functionalization reactions in organic synthesis.
• Research & Development: Employed in laboratory settings for chemical research and process development.

Basic Information

Product Name	Sodium 4-Hydroxybenzenesulfonate
CAS No.	825-90-1
Molecular Formula	C6H5NaO4S
Molecular Weight	196.16 g/mol
Synonyms	4-Hydroxybenzenesulfonic Acid Sodium Salt; Sodium p-Phenolsulfonate; Phenol-4-sulfonic Acid Sodium Salt; p-Hydroxybenzenesulfonic Acid Sodium Salt; Sodium Phenol-4-sulfonate; 4-Hydroxybenzenesulfonate Sodium; Benzenesulfonic Acid, 4-hydroxy-, Sodium Salt (1:1)
EINECS	212-557-9

Quality Control

Our Sodium 4-Hydroxybenzenesulfonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and composition. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, loss on drying, and impurity profiles. Our quality commitment ensures reliability for your critical B2B applications.

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 to prevent absorption of atmospheric moisture, which can affect quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Solubility	Clear, colorless solution
pH (5% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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