U.S. EPA registered pesticide info
'Nu-clo Concentrated Pool & Spa Chlorinating Granules' is an algaecide and disinfectant. Its Federal EPA registration number is: 3525-154. It was originally approved by EPA on 27 Sep 1968. It has a 'Danger' signal word. It has the following active ingredients: Sodium dichloro-s-triazinetrione. It's approved for 1 sites including swimming pool water. It is also approved for 1 pests and pest groups including but not limited to algae.