Description

1,3-Benzenedisulfonic Acid Disodium Salt is a versatile organic salt widely used as a key intermediate and functional additive in industrial synthesis. Its primary value lies in its ability to act as a sulfonating agent, dispersant, and chelating compound, facilitating various chemical processes. This product is essential for manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries seeking reliable performance and consistent quality.

Application

• Dye & Pigment Intermediate: A crucial building block in the synthesis of acid dyes, reactive dyes, and other colorants.
• Pharmaceutical Synthesis: Used as a sulfonation agent and intermediate in the production of certain active pharmaceutical ingredients (APIs).
• Chelating Agent: Functions to bind metal ions in various industrial processes and formulations.
• Dispersant & Leveling Agent: Improves the dispersion of solids in liquids, used in coatings, inks, and ceramic applications.
• Electroplating Additive: Employed in electroplating baths to improve finish quality and bath stability.
• Research & Development: Serves as a standard or reagent in chemical research and analytical laboratories.

Basic Information

Product Name	1,3-Benzenedisulfonic Acid Disodium Salt
CAS No.	831-59-4
Molecular Formula	C6H4Na2O6S2
Molecular Weight	304.19 g/mol
Synonyms	Benzene-1,3-disulfonic Acid Disodium Salt; m-Benzenedisulfonic Acid Disodium Salt; Sodium m-Benzenedisulfonate; 1,3-Benzenedisulfonate Disodium Salt; Disodium 1,3-Benzenedisulfonate; Disodium m-Benzenedisulfonate; m-Phenylenedisulfonic Acid Disodium Salt; Sodium 1,3-Benzenedisulfonate
EINECS	212-615-7

Quality Control

Our 1,3-Benzenedisulfonic Acid Disodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
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.