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Polyethoxylated tallow amine (POEA) is a surfactant that enhances the activity of herbicides such as glyphosate. It is assumed to be made from tallow. Surfactants in a herbicide product improve wettability of the hydrophobic surface of plants for maximum coverage and help the herbicide to penetrate through the plant surface.〔(Appendix B, PHYSICAL AND CHEMICAL PROPERTIES ) US EPA, 3 pages 17 October 2008〕〔U.S. Patent 4,528,023〕 ==Composition and use== The polyethoxylated tallow amine used as a surfactant is referred to in the literature as MON 0139 or polyoxyethyleneamine (POEA). It is contained in the herbicide Roundup. According to a 1997 review, "presumably, the Roundup surfactant is a derivative of tallow, a complex mixture of fat from the fatty tissue of cattle or sheep. Tallow contains a variety of fatty acids including oleic (37–43%), palmitic (24–32%), stearic (20–25%), myristic (3–6%), and linoleic (2–3%) acids as well as small amounts of cholesterol, arachidonic, elaidic, and vaccenic acids (Budavari 1989). An ethoxylated tallow amine (CAS No. 61791-26-2), is on the U.S. EPA List 3 of Inert Ingredients of Pesticides."〔 Roundup Pro is a formulation of glyphosate that contains a "phosphate ester neutralized polyethoxylated tallow amine" surfactant; as of 1997 there was no published information regarding the chemical differences between the surfactant in Roundup and Roundup Pro.〔 POEA concentrations range from <1% in ready-to-use glyphosate formulations to 21% in concentrates.〔 POEA constitutes 15% of Roundup formulations and the phosphate ester neutralized polyethoxylated tallow amine surfactant constitutes 14.5% of Roundup Pro.〔 Surfactants are added to glyphosate to allow effective uptake of water-soluble glyphosate across plant cuticles, which are hydrophobic, and reduces the amount of glyphosate washed off of plants by rain.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polyethoxylated tallow amine」の詳細全文を読む スポンサード リンク
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