Description

1,7-Diaminoheptane is a linear aliphatic diamine with the CAS number 646-19-5, serving as a versatile bifunctional building block in organic synthesis. Its primary value lies in its ability to act as a spacer or linker molecule, introducing a defined seven-carbon chain between functional groups in polymers, pharmaceuticals, and specialty chemicals. This compound is essential for researchers and manufacturers in the pharmaceutical, polymer, and agrochemical industries who require precise molecular architecture for developing new materials, active ingredients, and cross-linking agents.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly in creating diamide-based compounds and molecular scaffolds.
• Polymer Chemistry: Used as a monomer or chain extender in the production of polyamides (nylons), polyurethanes, and epoxy curing agents, imparting specific flexibility and thermal properties.
• Cross-linking Agent: Functions as a cross-linker for resins, coatings, and adhesives, enhancing mechanical strength and chemical resistance.
• Organic Synthesis: Serves as a precursor for synthesizing macrocyclic compounds, chelating agents, and complex organic molecules in research and development.
• Agrochemical Synthesis: Intermediate in the manufacture of certain herbicides, fungicides, and plant growth regulators.
• Surface Modification: Used to modify surfaces and nanoparticles, improving adhesion and introducing amine functionality for further conjugation.

Basic Information

Product Name	1,7-Diaminoheptane
CAS No.	646-19-5
Molecular Formula	C7H18N2
Molecular Weight	130.23 g/mol
Synonyms	Heptamethylenediamine; 1,7-Heptanediamine; 1,7-Diamino-n-heptane; HMD (Heptamethylenediamine); Diaminoheptane; 1,7-Diamino-heptan; 7-Aminoheptylamine
EINECS	211-468-1

Quality Control

Our 1,7-Diaminoheptane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with various industry standards, and specifications can be tailored to meet specific customer requirements for research or commercial-scale applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality. Keep away from strong oxidizing agents and acids.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Report and comply with agreed limits
Specific Gravity (20°C)	0.85 - 0.90
Refractive Index (20°C)	1.450 - 1.460

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