Description

4-Phenylaminobenzenediazonium Hydrogensulfate is a specialized diazonium salt compound with the CAS registry number 139479-06-4. This chemical is valued for its role as a versatile intermediate in the synthesis of dyes, pigments, and functional organic materials. It is primarily required by manufacturers in the fine chemical, specialty dye, and advanced material research sectors seeking to introduce specific aromatic amine functionalities into complex molecular structures.

Application

• Dye and Pigment Synthesis: A key intermediate in the production of azo dyes and high-performance organic pigments.
• Chemical Research & Development: Used as a building block for creating novel aromatic compounds and functional polymers.
• Photographic Industry: Employed in the formulation of certain light-sensitive compounds and imaging agents.
• Surface Modification: Facilitates the covalent grafting of organic layers onto material surfaces via diazonium chemistry.
• Pharmaceutical Intermediates: Serves as a precursor in the multistep synthesis of complex active pharmaceutical ingredients (APIs).

Basic Information

Product Name	4-Phenylaminobenzenediazonium Hydrogensulfate
CAS No.	139479-06-4
Molecular Formula	C12H11N3O4S
Molecular Weight	293.30 g/mol
Synonyms	4-(Phenylamino)benzenediazonium Hydrogen Sulfate; 4-Anilinobenzenediazonium Bisulfate; p-(Phenylamino)benzenediazonium Hydrogen Sulfate; Diazonium Salt of 4-Aminodiphenylamine; Fast Red ITR Salt; Azoic Diazo Component; 1-Diazo-4-(phenylamino)benzene Hydrogen Sulfate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Quality parameters are strictly monitored, including purity, identity, and impurity profiles. Certificates of Analysis (COA) documenting all test results are available upon request to support your quality assurance protocols.

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 nature as an easily oxidized compound, it is recommended to store under an inert atmosphere for long-term stability. Keep away from heat, sparks, and incompatible materials.

Specification

Item	Specification
Appearance	Light yellow to beige crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Solubility	Soluble in polar aprotic solvents

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