Excited state dynamics of neutral and anionic forms of 2-((2- hydroxybenzylidene)amino)phenol (HBAP). a Schiff base. has been elucidated using time resolved fluorescence spectroscopy. The neutral molecule exhibits keto-enol tautomerism. https://www.chincoponydrillteam.com/product-category/gardening-household-cleaning-and-hygiene-products/