Description

4-Aminobenzene-1,2-Diol (CAS NO 4956-56-3) is a versatile aromatic amine-diol compound that serves as a critical building block in advanced organic synthesis. Its bifunctional structure, featuring both an amino and two hydroxyl groups, makes it a valuable precursor for creating complex molecules with specific electronic and binding properties. This chemical is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to develop active ingredients, dyes, and polymer modifiers.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with catechol or aminophenol moieties.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Serves as a coupling agent and intermediate for azo dyes, hair dyes, and oxidation colorants.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for specialty polymers, resins, and epoxy hardeners.
• Chemical Research & Development: A valuable reagent in organic synthesis for constructing heterocyclic compounds and complex ligands.
• Photographic Chemicals: Used in the formulation of certain developers and other photographic processing agents.

Basic Information

Product Name	4-Aminobenzene-1,2-Diol
CAS No.	4956-56-3
Molecular Formula	C6H7NO2
Molecular Weight	125.13 g/mol
Synonyms	4-Aminocatechol; 1,2-Dihydroxy-4-aminobenzene; 4-Amino-1,2-benzenediol; 2,3-Dihydroxyaniline; 4-Aminopyrocatechol; o-Aminohydroquinone; 4-Amino-1,2-dihydroxybenzene
EINECS	225-590-8

Quality Control

Our 4-Aminobenzene-1,2-Diol is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. 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, well-ventilated area at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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