Overview Dabco DC5LE is a low-emission, delayed-action co-catalyst that strongly promotes the urethane (polyol-isocyanate) reaction. It is a clear, colourless liquid with a mild odour.Dabco DC5LE is compatible with a wide range of polyols and isocyanates. It is also compatible with water, which makes it ideal for use in applications where water-based foams are required....