Description

Benzenesulfonic Acid, 3-Hydroxy-, Monosodium Salt is a versatile organic salt widely utilized as a key intermediate and functional additive in advanced chemical synthesis. Its molecular structure, featuring both a sulfonate and a phenolic hydroxyl group, provides excellent water solubility and chelating properties, making it valuable for modifying surface characteristics and controlling reaction pathways. This compound is particularly essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable, high-purity building blocks for downstream processes.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring sulfonated or phenolic motifs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where its ionic character aids in formulation stability and bioavailability.
• Dye and Pigment Manufacturing: Acts as a coupling agent and solubilizing group in the synthesis of azo dyes and other complex colorants.
• Surfactant and Detergent Component: Functions as an anionic surfactant precursor or additive in specialized cleaning and industrial formulations.
• Corrosion Inhibitor: Employed in water treatment and metalworking fluids due to its ability to chelate metal ions and form protective layers on surfaces.
• Research & Development: A valuable reagent in organic chemistry research for studying sulfonation reactions and creating novel polymeric materials.

Basic Information

Product Name	Benzenesulfonic Acid, 3-Hydroxy-, Monosodium Salt
CAS No.	14278-60-5
Molecular Formula	C6H5NaO4S
Molecular Weight	196.16 g/mol
Synonyms	3-Hydroxybenzenesulfonic Acid Sodium Salt; Sodium 3-Hydroxybenzenesulfonate; m-Hydroxybenzenesulfonic Acid Sodium Salt; Sodium m-Phenol Sulfonate; 3-Hydroxybenzene-1-sulfonic Acid Sodium Salt; Phenol-3-sulfonic Acid Sodium Salt; Metanilic Acid Sodium Salt (less common)
EINECS	Contact for details

Quality Control

Every batch of our Benzenesulfonic Acid, 3-Hydroxy-, Monosodium Salt is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive batch-specific documentation. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

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 and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 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.