Reference

Synthesis and characteristics of the environmentally protective biocide

Synthesis and characteristics of the environmentally protective biocide. Yang, Yong; Li, Jian-fen; Fan, Qiu-yan; Dong, Bing; Li, Yi; Lou, Guo-hong (Department of Biotechnology and Chemical, Wuhan Polytechnic University, Wuhan 430023, Peop. Rep. China). Huaxue Yu Shengwu Gongcheng, 20(5), 46-47 (Chinese) 2003 Huaxue Yu Shengwu Gongcheng Bianjibu. CODEN: HYSGAF. ISSN: 1672-5425. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) 2,2-Dibromo-3-nitrilopionamide (DBNPA) [10222-01-2] is a ideal environmental protection agent biocide-algaecide and water treatment agent. The optimal synthetic method was found in the expt. DBNPA was prepd. efficiently by reacting CAA with Br2 in the presence of H2O2. The action of H2O2 is that excessive HBr produced in the reaction was transformed into Br2 which could be recycled.

Efficacy and decomposition of DBNPA in two cooling systems

Efficacy and decomposition of DBNPA in two cooling systems. Meitz, Amanda K. (Mogul Corp., Chagrin Falls, OH, USA). Proc. - Int. Water Conf., Eng. Soc. West. Pa., 45th, 293-8 (English) 1984. CODEN: PWWPAY. ISSN: 0099-409X. DOCUMENT TYPE: Journal CA Section: 61 (Water) The biocide 2,2-dibromo-3-nitrilopropionamide (DBNPA) [10222-01-2] was evaluated for decompn. and efficacy against bacteria in cooling water system treatment. For the 2 cooling systems studied, DBNPA can be used at pH 9 with acceptable results, as shown by the 3-4 order of magnitude decrease in colony-forming units/mL. One primary advantage of this compd. is that the biocide decomps. quickly to less toxic intermediates and end products at a rate that can be calcd. based on lab hydrolyses of the compd. In field situations, the DBNPA disappeared from the system somewhat faster than predicted by using the previously developed equations.