1,6-Hexanediamine Dihydrochloride CAS 6055-52-3

What is 1,6-Hexanediamine Dihydrochloride?

1,6-Hexanediamine Dihydrochloride is a high-purity crystalline compound commonly used as an intermediate in chemical synthesis, polymer production, and pharmaceutical research. It is the dihydrochloride salt form of 1,6-hexanediamine, offering better stability, solubility, and ease of handling compared to the free amine.

Known by the name hexanediaminedihydrochloride, this compound plays a critical role in the preparation of nylon intermediates, epoxy curing agents, corrosion inhibitors, and pharmaceutical intermediates.

1,6-Hexanediamine Dihydrochloride is a white/off-white crystalline powder with a molecular formula of C₆H₁₆Cl₂N₂ and molecular weight of 187.11 g/mol. It dissolves well in water, slightly in methanol/ethanol, and is insoluble in non-polar solvents, with a melting point of 230–235 °C (decomposes at higher temps).

Specificatie

Main Applications of 1,6-Hexanediamine Dihydrochloride (CAS 6055-52-3)

1,6-Hexanediamine Dihydrochloride (hexanediaminedihydrochloride) is widely used as a functional additive in the processing of polymer materials such as polyurethane, nylon, and epoxy resin. It serves as a chain extender or curing agent, significantly enhancing the mechanical and thermal properties of finished materials.

1. Polyurethane/Nylon Synthesis
As a chain extender, hexanediaminedihydrochloride reacts with polyether polyols and diisocyanates to elongate polymer chains. This process increases the tensile strength, wear resistance, and heat stability of the final product. It is particularly suitable for manufacturing high-performance polyurethane elastomers and modified nylon 66 materials used in engineering plastics and specialty coatings.

2. Epoxy Resin Curing
When used as a curing agent, 1,6-hexanediamine dihydrochloride crosslinks with epoxy resins to form a three-dimensional network structure. This reaction shortens curing time while improving adhesion, chemical resistance, and corrosion protection of the cured material. Therefore, it is widely applied in electronic encapsulation materials, adhesives, coatings, and composites.

3. Metal Corrosion Inhibitors:
In industrial coolants and rust inhibitors, hexanediaminedihydrochloride forms a protective adsorption film on metal surfaces. This layer effectively prevents the corrosion of steel, copper, and other metals under humid or acidic conditions, extending equipment lifespan and reliability.

Features

1. Purity ≥ 98%, exceeding industry standard.

2. Moisture content ≤1%,  the insulation performance great.

3. Excellent thermal stability.

Verpakking

25kg/zak