U.S. EPA registered pesticide info
'Nalco 3wt-138 Anaerobic Microorganism Control Chemical' is a microbicide/microbistat. Its Federal EPA registration number is: 1706-167. It was originally approved by EPA on 22 Aug 1986. Its registration got cancelled on 28 May 1991. It has a 'Caution' signal word. It has the following active ingredients: 1H-Imidazole-1-ethanol, 2-methyl-5-nitro-. 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 slime-forming bacteria.