Coscat™ 83

Coscat™ 83 is a proprietary organobismuth compound which was specifically developed as a catalyst for 2-component polyurethane systems. Coscat™ 83 is recommended as a sole or co-catalyst in urethane elastomer systems typically requiring lead, mercury or tin catalysts. Coscat™ 83 has a high selectivity toward the polyol-isocyanate reaction, thus avoiding bubble generation at low levels of moisture.


Molar WeightNA
Melting Point-40 °C
Boiling Point230 °C
Flash Point105°C
Density1.11 g/cc
FormsLiquid (clear)

Uses and Applications

Key applications

  • Coatings
  • Plastics and polymers
  • Catalysts


  • Coatings & Construction
  • Polymers
  • Chemical Processing

Synonyms: Bi Catalyst

Chemical Formula: NA

CAS Number: 34364-26-6/26896-20-8