the dispersible oil suspending agent "D" is the code of Oil-basedsuspensionconcentrate, also known as Oildispersion dosage form, newly introduced by FAO in recent years. It has not been seen in the Chinese national standard "GB/T19378-23 pesticide dosage form name and code". The definition given by FAO is: liquid preparation with active ingredients (which may contain other dissolved active ingredients) stably suspended in organic fluid and diluted with water for use. Among the 15 pesticide formulations added in Part 2' Product Chemistry' of the Chinese People's Congress and China's agricultural industry standard NY/T1667. 2-28, the definition of giving dispersible oil suspending agent (OD) is that particles of active ingredients and their auxiliaries can be stably dispersed in non-water-quality liquid and used after being diluted with water.
Reference patent: nicosulfuron dispersible oil suspension adjuvant and its dispersible oil suspension. http://www.google.co.uk/patents/CN12657161A? hl=zh-CN& cl=zh