Polyurethane Amine Catalyst PC-5 Pentamethyldiethylenetriamine PMDETA CAS 3030-47-5

AMINE CATALYST PMDETA Pentamethyldiethylenetriamine (PC-5) CAS 3030-47-5

PC-5 (CAS 3030-47-5) refers to the chemical Pentamethyldiethylenetriamine, commonly abbreviated PMDETA (also seen as PMDTA) and marketed under trade names like Polycat 5, PC5, FENTACAT 5, etc. It’s a tertiary polyamine compound with the molecular formula C₉H₂₃N₃ and molar mass ~173.3 g/mol.

Chemical Identity

• Name: Pentamethyldiethylenetriamine

• Synonyms: PMDETA, PMDTA, PC-5, Polycat 5, FENTACAT 5, bis(2-dimethylaminoethyl)methylamine

• CAS Registry Number: 3030-47-5

• Molecular Formula: C9H23N3

• Molecular Weight: ~173.3 g/mol

Properties

• Appearance: Colorless to pale yellow transparent liquid

• Boiling Point: ~198 °C

• Melting Point: ~-20 °C

• Density: ~0.83 g/mL at 25 °C

• Odor: Characteristic amine (fishy)

• Solubility: Miscible with water, soluble in many organic solvents

Industrial Use

PC-5/PMDETA is primarily used as a catalyst in the polyurethane industry, especially for:

• Polyurethane foam production (e.g., soft and rigid foams)

• Catalyzing foaming and helping balance gelation reactions

• Enhancing fluidity in large-capacity rigid foam systems

Safety and Handling

While specific safety data sheets (SDS) should be consulted, general safety considerations include:

• Can be irritant or corrosive to skin and eyes

• May be harmful if inhaled, swallowed, or on skin contact

• Use proper PPE (gloves, goggles, ventilation) when handling

• Stable under normal conditions but incompatible with strong oxidizers/acids (based on typical polyamine profiles)