RT Book, Section A1 Geller, Richard J. A2 Olson, Kent R. SR Print(0) ID 55979928 T1 Chapter 122. Paraquat and Diquat T2 Poisoning & Drug Overdose, 6e YR 2012 FD 2012 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-166833-0 LK accessmedicine.mhmedical.com/content.aspx?aid=55979928 RD 2022/05/25 AB Paraquat dichloride (CAS # 1910-42-5) and diquat dibromide (CAS # 85-00-7) are dipyridyl herbicides used for weed control and as preharvest (desiccant) defoliants. Product formulations differ by country. In the United States, Syngenta currently markets Gramoxone Inteon (30.1% paraquat dichloride) and Reward (37.3% diquat dibromide). Other, less concentrated formulations of diquat are also marketed. Roundup QuikPro is a water-soluble granular formulation (73.3% glyphosate and 2.9% diquat). In the United States, paraquat poisonings greatly outnumber diquat poisonings.