Description

Benzene-1,3-Disulphonic Acid is a key aromatic sulfonic acid derivative, serving as a versatile intermediate in the synthesis of more complex chemical structures. Its primary commercial value lies in its ability to introduce sulfonic acid groups into target molecules, which is critical for modifying solubility, acidity, and binding properties. This compound is essential for manufacturers in the dye, pharmaceutical, and specialty chemical industries seeking to produce sulfonated intermediates, optical brighteners, and pharmaceutical actives.

Application

• Dye and Pigment Intermediate: Acts as a crucial building block for synthesizing sulfonated azo dyes and optical brighteners.
• Pharmaceutical Synthesis: Used in the production of active pharmaceutical ingredients (APIs) and diagnostic agents requiring sulfonic acid functionality.
• Chemical Intermediate: Serves as a precursor for other benzene disulphonic acid derivatives, such as salts and esters, used in various industrial processes.
• Catalyst and Additive Manufacturing: Employed in the formulation of acid catalysts and as an additive in electroplating baths and surface treatment solutions.
• Research & Development: Utilized in academic and industrial R&D for exploring new synthetic routes and material properties.

Basic Information

Product Name	Benzene-1,3-Disulphonic Acid
CAS No.	98-48-6
Molecular Formula	C6H6O6S2
Molecular Weight	238.24 g/mol
Synonyms	m-Benzenedisulfonic Acid; 1,3-Benzenedisulfonic Acid; Benzene-m-disulfonic Acid; Meta-Benzenedisulphonic Acid; Isophthalic Acid Disulfonic Acid Derivative; Benzene-1,3-disulfonic Acid; 3-Sulfobenzenesulfonic Acid
EINECS	202-674-3

Quality Control

Our Benzene-1,3-Disulphonic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets exacting standards for industrial and fine chemical synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability, purity, and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled 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 (Titration)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
Sulfate Ash	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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