Atrazine, Simazine and Cyanazine; Notice of Initiation of Special Review

Résumé

This notice announces that EPA is initiating a Special Review on pesticide products containing the herbicides atrazine, simazine and cyanazine. Atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s- triazine], simazine [2-chloro-4,6-bis(ethylamino)-s-triazine] and cyanazine [2-((4-chloro-6-(ethylamino)-s-triazine-2-yl)amino)-2- methylpropionitrile] will be collectively referred to hereafter in this Notice as the triazines. The triazines are widely used herbicides that control many broadleaf weeds and some grasses. All three are used on corn and may be alternatives for each other in some situations. Other uses include citrus, nut orchards (simazine), sugarcane and sorghum (atrazine) and cotton (cyanazine). Based on laboratory animal data, EPA has concluded that these three triazine compounds are possible human carcinogens and has determined that exposure to the triazines in the diet (food and drinking water) may pose risks of concern. EPA has also determined that exposure to these triazines may pose risks of concern to applicators and mixer/loaders who use products containing one or more of these chemicals and to the public who may use home lawncare products containing atrazine. Ac