Pentamethylene diamine (PDA), also known as 1,5-diaminopentane, is an important five-carbon monomer. It is a colorless, smoky liquid with an ammonia-like odor, which is easily soluble in water and ethanol. Cathay uses renewable plant resources as the raw material to produce high purity bio-based PDA through a specific bioconversion process. Its carbon content from renewable resources is 100%.

PDA can be used in polyamides, pentamethylene diisocyanates (PDI), epoxy resin curing agents, organic synthesis intermediates, etc. Application fields include textiles, engineering materials, pharmaceuticalsns, pesticides, organic synthesis and other fields.

In 2014, Cathay realized a breakthrough in the PDA industrialization technology and completed the pilot plant test. After verification by international downstream customers, PDA was successfully applied to automobile surface paint, and this application has won the ECS Innovation Award.

The large-scale production of PDA is expected to solve the import dependence problem of adiponitrile, which is the core bottleneck of the development of the domestic double monomer polyamide industry. PDA provides our customers with new "biological manufacturing" materials made from renewable biomass raw materials.

Cathay's bio-based PDA is made from renewable plant raw materials. The bio-based content has been analytically verified by third-party laboratories using ASTM 6866 methodology to have 100% renewable carbon content. This effectively reduces the use of products made from fossil raw materials such as petroleum, and thus reduces carbon emissions.

Carbon footprint assessment results:

Parameter Unit Applied Datasets(Ecoinvent 3.6 Products
Nylon 6 Nylon 6-6 1,5-pentanediamine
Global warming potential-Fossil (GWP-fossil) kg CO2 eq. 9.90E+00 8.66E+00 7.31E+00
Global warming potential-Biogenic (GWP-biogenic) kg CO2 eq. 1.20E-02 3.11E-02 -5.95E+00
Global warming potential-Land use and Land transformation (GWP-luluc) kg CO2 eq. 1.95E-05 1.73E-05 1.12E-03
Global warming potential(GWP)-Total kg CO2 eq. 9.91E+00 8.69E+00 1.36E+00

Note: Impact results are calculated based on 1 kg of product's production.

Molecular formula: C5H14N2
Molecular? weight: 102.18
? ?CAS? ?number: 462-94-2
? ?ECS? ?number: 207-329-0
? Melting? ?point: 9.0℃
? Boiling? ? point: 178~180℃
? ? ?Application: polyamide, pentamethylene diisocyanate(PDI), epoxy resin curing agent, organic synthesis intermediate, etc.
Product Index
Item Value
Appearance colorless liquid, 25℃
Content(%) >99.5%
Water(mg/kg) <5000
Color <8
Product Transport:

Liquid status at room temperature. Can be transported directly in a drum or tank car.

  • Green and environmentally friendly
    Made from bio-based and renewable resources, with a biological production process at room temperature and pressure, and friendly to the natural environment
  • Low melting point
    Melting point is 9 ℃. Liquid at normal temperatures, easier to operate and process
  • Higher reactivity
    Shorter carbon chain, lower molecular weight, higher reactivity and faster reaction speed
  • Higher strength
    Higher density of functional groups due to its molecular structure, higher product strength
  • New platform compound
    New platform compound with large potential to development polymers with performance and cost advantages