Canadian Water Quality Guidelines for the Protection of Aquatic Life - Cyanazine

yanazine (C9H13CN6) is a selective systemic triazine herbicide that inhibits photosynthesis (Tomlin 1994). It is used for general weed control in dry bulb onions and corn (Agriculture and Agri-Food Canada 1997). Cyanazine is the trade name for 2-[[4chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino]-2-methylpropanenitrile (CAS 2175-46-2). Its common names include Bladex, Fortol, and Payze. At standard temperature and pressure, cyanazine is a white, crystalline, odourless solid. Cyanazine has an aqueous solubility of 171 mg⋅L at 25°C (Worthing and Walker 1987), a low vapour pressure (200 nPa at 20°C) (Worthing 1987), and a log octanol– water partition coefficient (3.68) (Banerjee et al. 1980).