'Nalco Visco 4997' is a microbicide/microbistat. Its Federal EPA registration number is: 10349-22. It was originally approved by EPA on 26 Jun 1980. Its registration got cancelled on 02 Jul 1993. It has a 'Danger' signal word. It has the following active ingredients: 3-Alkoxy*-2-hydroxypropyl trimethyl ammonium chloride *(100% C12-C15 as in linear, primary alcohol). It's approved for 1 sites including secondary oil recovery injection water. It is also approved for 1 pests and pest groups including but not limited to slime-forming bacteria.