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1,6-Hexanediamine (HDA): A Versatile Aliphatic Diamine for Epoxy Curing and High-Performance Polymer Applications

1,6-Hexanediamine (HDA): A Versatile Aliphatic Diamine for Epoxy Curing and High-Performance Polymer Applications
July 16, 2026

Product Name: 1,6-HEXANEDIAMINE

CAS No.: 124-09-4

Chemical Name: 1,6-Hexanediamine;HMDA;1,6-Diaminohexane;Hexamethylene diamine

 

1. Product Information

Item

Information

Chemical Name

1,6-Hexanediamine;HMDA;1,6-Diaminohexane;Hexamethylene diamine

CAS No.

124-09-4

Product Category

Aliphatic diamine; epoxy curing agent and polyamide resin raw material

Appearance

Colorless flake crystals

Main Applications

Isocyanates; Epoxy curing agents; Polyamide resins, adhesives, inks; Water treatment chemicals

 

2. Description

1,6-HEXANEDIAMINE is colorless flake crystals with ammonia odor. It is soluble in water, ethanol and ether. It is easy to deliquescence, flammable, toxic. It easily absorbs moisture and carbon dioxide in the air.

Hexamethylenediamine is mainly used in the synthesis of nylon 66 and 610 resin, also used to synthesize polyurethane resin, ion exchange resin and hexyl diisocyanate. It is used as a curing agent for urea-formaldehyde resin, epoxy resin, organic cross-linking agent, etc. It is also used as a stabilizer in the textile and paper industry, bleaching agent, aluminum alloy corrosion inhibitor and neoprene emulsifier.

 

3. Structural Features and Key Properties

1,6-HEXANEDIAMINE contains two terminal primary amino groups and shows typical reactivity of aliphatic diamines. This structure makes it suitable for polymerization, cross-linking and curing reactions in multiple chemical material systems.

• Two terminal primary amino groups for curing and cross-linking applications.

• Important raw material for nylon 66 and 610 resin.

• Soluble in water, ethanol and ether.

• Easy to deliquescence and absorbs moisture and carbon dioxide in the air.

• Flammable and toxic; operators should use protective equipment and follow MSDS requirements.

 

4. Specification Properties

Specification Properties

Value

Appearance

Colorless flake crystals

Purity, %

Min. 99.90

Water, wt.%

Max. 0.05

Crystallization point, °C

Min. 40.9

Color, Hazen

Max. 5

Polarographic value, mmol/t

Max. 100.0

Trans-diaminocyclohexane, mg/kg

Max. 10.0

 

5. Applications

• Isocyanates

• Epoxy curing agents

• Petroleum additives

• Polyamide resins, adhesives, inks,

• Scale and corrosion inhibitors

• Water treatment chemicals

 

6. Packaging

• Drums

• Other packages

 

7. Safety

Store in a cool, ventilated warehouse. Keep away from tinder, heat sources. The library temperature should not exceed 37 °C. The packaging should be sealed and not in contact with air. Should be stored separately from the oxidant, avoid mixed storage.

Explosion-proof lighting and ventilation facilities are adopted. It is forbidden to use mechanical equipment and tools that are prone to sparks. Storage areas should be equipped with emergency treatment equipment for leakage and suitable containment materials. Operators should wear protective equipment to avoid direct contact with this product.

When processing, using, and disposing of this product, the relevant safety and health laws and regulations of the country and region shall be observed. All safety information is provided in the Material Safety Data Sheet.

 

8. Notice

The information contained herein is for product database and reference purposes. The user should perform his/her own tests to determine the suitability for a particular purpose. Final product use and safety compliance should follow the latest TDS, MSDS and COA documents.

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