Description

33Dichloro55Benzidinedisulphonicacid is a specialized aromatic disulfonic acid derivative, serving as a critical intermediate in advanced chemical synthesis. Its value lies in providing a functionalized, halogenated aromatic core that enables the development of complex molecules, including dyes, pigments, and high-performance polymers. This compound is essential for manufacturers and R&D laboratories in the fine chemicals, specialty dyes, and advanced material sectors seeking to introduce specific chlorinated and sulfonated functionalities into their target structures.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and reactive dyes, imparting color fastness and specific hue properties.
• Polymer Modification: Used to introduce sulfonic acid groups into polymer chains, enhancing properties like hydrophilicity, ion-exchange capacity, or dyeability for specialty plastics and fibers.
• Pharmaceutical Synthesis: Serves as a building block for active pharmaceutical ingredients (APIs) and diagnostic agents requiring a disulfonated benzidine scaffold.
• Liquid Crystal and Electronic Material Production: Acts as a functional intermediate in the manufacture of advanced materials for displays and electronic components.
• Chemical Research & Development: Utilized in organic synthesis for creating novel compounds with specific aromatic substitution patterns for various industrial applications.
• Cross-linking Agent: Potential use in creating cross-linked polymeric networks for resins or membranes due to its bifunctional sulfonic acid groups.

Basic Information

Product Name	33Dichloro55Benzidinedisulphonicacid
CAS No.	123251-96-7
Molecular Formula	C12H8Cl2N2O6S2
Molecular Weight	403.23 g/mol
Synonyms	3,3'-Dichlorobenzidine-5,5'-disulfonic Acid; 5,5'-Disulfo-3,3'-dichlorobenzidine; DCBDSA; Benzidine-5,5'-disulfonic acid, 3,3'-dichloro-; 3,3'-Dichloro[1,1'-biphenyl]-4,4'-diamine-5,5'-disulfonic Acid
EINECS	Contact for details

Quality Control

Our 33Dichloro55Benzidinedisulphonicacid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Standard quality parameters include assay (purity), identification, and control of key impurities. Certificates of Analysis (COA) documenting these results are available for every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents. Due to its strong acid nature, ensure containers are made of compatible materials and are clearly labeled.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated 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.