Description

p-Diazobenzenesulfonic Acid is a versatile diazonium salt derivative, primarily valued as a key synthetic intermediate in the production of dyes, pigments, and functional organic compounds. Its reactive diazonium group enables efficient coupling reactions, making it essential for creating azo compounds with specific chromophoric properties. This chemical is particularly important for manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries seeking to develop colorants or modify molecular structures.

Application

• Dye and Pigment Manufacturing: Serves as a critical precursor for synthesizing azo dyes and pigments, providing vibrant colors for textiles, inks, and plastics.
• Pharmaceutical Intermediates: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents that incorporate azo or sulfonic acid functionalities.
• Chemical Research & Development: Employed as a building block in organic synthesis for creating novel compounds, including polymers and functional materials.
• Photographic Chemicals: Can be utilized in the formulation of certain light-sensitive compounds for specialized photographic processes.
• Cross-linking Agent: Potential use in modifying polymers or biomolecules due to its reactive diazonium group.

Basic Information

Product Name	p-Diazobenzenesulfonic Acid
CAS No.	305-80-6
Molecular Formula	C6H5N2O3S
Molecular Weight	185.18 g/mol
Synonyms	4-Diazobenzenesulfonic Acid; Benzenesulfonic Acid, 4-diazo-; p-Benzenediazonium Sulfonate; Diazonium Salt of p-Phenolsulfonic Acid; Fast Red Salt; 4-Diazo-1-sulfobenzene; 305-80-6; EINECS 206-174-1
EINECS	206-174-1

Quality Control

Our p-Diazobenzenesulfonic Acid is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We adhere to relevant industry standards, and each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, purity, and impurity profiles. Certificates are available upon request to support your quality assurance and regulatory compliance needs.

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 tightly sealed to prevent degradation from atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Solubility	Soluble in water, alcohols

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