'Biocide-q' is an algaecide. Its Federal EPA registration number is: 8249-1. It was originally approved by EPA on 20 Dec 1963. Its registration got cancelled on 01 Jul 1987. It has a 'Warning' signal word. It has the following active ingredients: 9-Octadecen-1-aminium, N-ethyl-N,N-dimethyl-, bromide. 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.