Description

1,18-Octadecane-Diamine is a long-chain aliphatic diamine with the CAS number 10341-25-0. This bifunctional compound is a valuable building block in polymer synthesis, offering unique properties derived from its extended hydrocarbon backbone and reactive amine termini. It is primarily utilized by manufacturers in the polymer, specialty chemical, and materials science industries for creating high-performance polyamides, epoxy curing agents, and surfactants.

Application

• Polymer Synthesis: A key monomer for producing long-chain polyamides (nylon 18,18) and other specialty polymers with enhanced flexibility, chemical resistance, and thermal properties.
• Epoxy Curing Agent: Used as a curing agent for epoxy resins, contributing to improved toughness, flexibility, and adhesion in coatings, composites, and adhesives.
• Corrosion Inhibitor Intermediate: Serves as a precursor in the formulation of corrosion inhibitors for industrial water treatment and oilfield applications.
• Surfactant & Amphiphile Production: Acts as a starting material for synthesizing cationic surfactants, gemini surfactants, and other amphiphilic compounds.
• Organic Synthesis Intermediate: Employed in pharmaceutical and agrochemical research for the synthesis of complex molecules requiring a long, functionalized chain.
• Surface Modification Agent: Used to modify surfaces (e.g., silica, metals) to improve adhesion, dispersion, or biocompatibility in advanced material applications.

Basic Information

Product Name	1,18-Octadecane-Diamine
CAS No.	10341-25-0
Molecular Formula	C₁₈H₄₀N₂
Molecular Weight	284.53 g/mol
Synonyms	Octadecamethylenediamine; 1,18-Diaminooctadecane; Octadecane-1,18-diamine; Octamethylenediamine (archaic); ODA (abbreviation); Long-chain C18 diamine; Octadecanediamine
EINECS	233-741-7

Quality Control

Our 1,18-Octadecane-Diamine is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay, identification, and impurity profiling, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture and carbon dioxide. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or flakes
Identification (IR)	Conforms to reference spectrum
Assay (GC or Titration)	≥ 98.0%
Melting Point	68 - 72 °C
Water Content (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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