Description

2,5-Dichlorosulfanilic Acid Sodium Salt is an important diazo component and intermediate in the synthesis of azo dyes and pigments. This compound matters for its role in producing vibrant, colorfast dyes with specific chemical and lightfastness properties. It is primarily needed by manufacturers in the dye and pigment industry, as well as by research laboratories developing new colorants and analytical reagents.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly for textiles and inks.
• Key starting material in the production of reactive dyes for cotton and other cellulose fibers.
• Used as a diazotization component in color chemistry for creating specific shades of red, orange, and yellow.
• Employed in the manufacture of biological stains and histochemical reagents for laboratory use.
• Potential use as a chemical intermediate in pharmaceutical and agrochemical research.
• Acts as a coupling agent in various organic synthesis processes.

Basic Information

Product Name	2,5-Dichlorosulfanilic Acid Sodium Salt
CAS No.	41295-98-1
Molecular Formula	C6H3Cl2NNaO3S
Molecular Weight	270.05 g/mol
Synonyms	Benzenesulfonic acid, 2,5-dichloro-4-amino-, sodium salt; Sodium 4-amino-2,5-dichlorobenzenesulfonate; 4-Amino-2,5-dichlorobenzenesulfonic acid sodium salt; 2,5-Dichloroaniline-4-sulfonic acid sodium salt; 2,5-Dichlorosulphanilic acid sodium salt; Diaz Component 10; Daito Red Salt TR
EINECS	Contact for details

Quality Control

Our 2,5-Dichlorosulfanilic Acid Sodium Salt is produced under a rigorous quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical characteristics are available upon request, supporting your quality assurance and regulatory compliance 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Off-white to light tan crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Water Content (Karl Fischer)	≤ 1.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 0.5%

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