Description

1,2-Diaminonaphthalene (CAS NO 938-25-0) is a high-purity aromatic diamine compound that serves as a critical building block and analytical reagent in advanced chemical synthesis. Its bifunctional amino groups make it a versatile precursor for creating complex heterocyclic structures, dyes, and specialized polymers. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries who require a reliable source of high-quality intermediates for their development and production processes.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of naphthyridine-based active pharmaceutical ingredients (APIs) and other nitrogen-containing heterocycles.
• Analytical Chemistry Reagent: Used as a derivatizing agent and chelating ligand for the spectrophotometric detection and quantification of trace metals like selenium and nitrite.
• Dye and Pigment Manufacturing: Serves as a foundational monomer for producing azo dyes, naphthol dyes, and other high-performance colorants.
• Polymer Science: Acts as a curing agent or chain extender in epoxy resin systems and as a monomer for polyimides and other high-temperature polymers.
• Agrochemical Synthesis: Intermediate in the production of certain herbicides, fungicides, and plant growth regulators.
• Corrosion Inhibitor Formulation: Component in specialty formulations designed to protect metal surfaces in industrial applications.
• Research & Development: Valuable tool in organic synthesis for constructing complex molecular architectures in academic and industrial R&D labs.

Basic Information

Product Name	1,2-Diaminonaphthalene
CAS No.	938-25-0
Molecular Formula	C10H10N2
Molecular Weight	158.20 g/mol
Synonyms	1,2-Naphthalenediamine; 1,2-DAN; 1,2-Naphthylenediamine; 1,2-Diaminonaphthalin; Naphthalene-1,2-diamine; 1,2-Dihydroxynaphthalene diamine (obsolete); 1,2-NA; C.I. 37240
EINECS	213-345-6

Quality Control

Our 1,2-Diaminonaphthalene is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements of our global customer base. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, guaranteeing traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C/59-77°F). Due to its light-sensitive and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light tan to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	96 - 100 °C
Loss on Drying	≤ 0.5%
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.