u-cat sa 506 is a thermal latent alkali generator. it is a p-toluenesulfonate of 1, 8-diazabicyclic [5.4.0]undec-7-ene (dbu). dbu is a strong base commonly used in organic chemistry. however, it is not very stable at room temperature and will break n, releasing ammonia. u-cat sa 506 is more stable than dbu and does not release...