Description

Benzaldehyde-3-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in fine chemical synthesis. Its value lies in its reactive aldehyde and sulfonic acid groups, which allow for selective functionalization and introduction of water-solubilizing properties into target molecules. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty dye industries seeking to develop advanced active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Crucial for synthesizing active pharmaceutical ingredients (APIs), particularly in the development of sulfonamide-based drugs and other therapeutic agents.
• Agrochemical Synthesis: Used in the production of modern herbicides, fungicides, and plant growth regulators, where the sulfonic acid group enhances solubility and bioavailability.
• Dye and Pigment Manufacturing: Acts as a key building block for creating water-soluble azo dyes and other complex colorants.
• Chemical Research & Development: Employed as a versatile reagent in organic synthesis for introducing both aldehyde and sulfonate functionalities.
• Corrosion Inhibitor Formulation: Used in the development of specialty chemicals for industrial water treatment and metal surface protection.
• Polymer Modification: Serves as a monomer or modifier to impart ionic character and improve the properties of specialty polymers and resins.

Basic Information

Product Name	Benzaldehyde-3-Sulfonic Acid
CAS No.	98-45-3
Molecular Formula	C7H6O4S
Molecular Weight	186.19 g/mol
Synonyms	3-Formylbenzenesulfonic Acid; m-Formylbenzenesulfonic Acid; Benzaldehyde-m-sulfonic Acid; 3-Sulfobenzaldehyde; m-Sulfobenzaldehyde; 1-Formyl-3-sulfobenzene; 3-Carboxybenzenesulfonic Acid (tautomer)
EINECS	202-669-5

Quality Control

Our Benzaldehyde-3-Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with global regulatory frameworks, including REACH.

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 incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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