U.S. EPA registered pesticide info
'National Chemsearch Chem-aqua 800-a Cooling Tower Algaecide' is an algaecide and microbicide/microbistat. Its Federal EPA registration number is: 1769-186. It was originally approved by EPA on 05 Nov 1969. Its registration got cancelled on 01 Jul 1987. It has a 'Danger' signal word. It has the following active ingredients: Pentachlorophenol, sodium salt. It's approved for 1 sites including cooling tower water. It is also approved for 1 pests and pest groups including but not limited to algae.