Description

4-Hydroxybenzenediazonium is a specialized diazonium salt derivative of phenol, serving as a critical intermediate in advanced organic synthesis. Its primary value lies in its ability to act as a versatile electrophile for introducing the 4-hydroxyphenyl group into target molecules via coupling reactions. This compound is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty dye industries, where it is used to create complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing phenolic or azo linkages.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators that require specific aryl coupling steps.
• Dye and Pigment Manufacturing: Serves as a precursor for azo dyes and pigments, where it contributes to color fastness and specific hue properties.
• Polymer Modification: Employed in surface functionalization and the creation of specialty polymers with tailored properties.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new coupling reactions and material science applications.
• Chemical Synthesis: Used in Sandmeyer and other diazonium replacement reactions to synthesize substituted benzenes and heterocycles.

Basic Information

Product Name	4-Hydroxybenzenediazonium
CAS No.	19089-85-1
Molecular Formula	C6H5N2O
Molecular Weight	121.12 g/mol
Synonyms	p-Hydroxybenzenediazonium; 4-Diazophenol; Diazonium, (4-hydroxyphenyl)-; Phenol, 4-diazo-; (4-Hydroxyphenyl)diazonium; p-Diazophenol; 4-Hydroxybenzenediazonium salt; 1-Diazo-4-hydroxybenzene
EINECS	Contact for details

Quality Control

Our 4-Hydroxybenzenediazonium is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and spectroscopic identification (IR, NMR), to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its light-sensitive and hygroscopic nature, this material must be handled under an inert atmosphere when appropriate and kept in original packaging until use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Off-white to light yellow solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 5.0%

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