'Daily Chlorinating Tablets' is an algaecide and disinfectant. Its Federal EPA registration number is: 3525-39. It was originally approved by EPA on 20 Jul 1974. Its registration got cancelled on 30 Nov 1992. It has a 'Warning' signal word. It has the following active ingredients: Trichloro-s-triazinetrione. It's approved for 1 sites including swimming pool water. It is also approved for 2 pests and pest groups including but not limited to algae and black algae.