The toxicity of polyurethane catalysts varies with the specific catalyst. Some catalysts are more toxic than others. It is very important to read the safety data sheet of any polyurethane catalyst before using it.

Here are some potential health effects of polyurethane catalysts:

Skin and eye irritation: Polyurethane catalyst can cause skin and eye irritation.
Respiratory problems: Polyurethane catalysts can irritate the respiratory system.
Nervous system problems: Polyurethane catalysts can cause neurological problems such as headaches, dizziness and nausea.
Cancer: Certain polyurethane catalysts are known to be carcinogens.
Always seek medical attention immediately if you come into contact with a polyurethane catalyst.