Highly water soluble agrichemicals by using engineered organic salts for reducing adverse environmental impacts

Autor(es)

Carvalho Jr, Paulo S. ; Guimaraes, Getton G. F. ^[1] ; Diniz, Luan F. ^[2] ; Ellena, Javier ^[2] ; Ribeiro, Caue ^{[3, 4]}

Afiliação do(s) autor(es)

^[1] EPAGRI Empresa Pesquisa Agr & Extensao Rural Sant, Rd Antonio Heil 6800, BR-88318112 Itajai, SC - Brazil

^[2] Univ Sao Paulo, Inst Fis Sao Carlos, CP 369, BR-13560970 Sao Carlos, SP - Brazil

^[3] Forschungszentrum Julich, Inst Energy & Climate Res IEK 3, Electrochem Proc Engn, D-52425 Julich - Germany

^[4] Embrapa Instrumentacao, Rua 15 Novembro 1452, BR-13560206 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: GREEN CHEMISTRY; v. 21, n. 23, p. 6419-6429, DEC 7 2019.
• Citações Web of Science: 0

Resumo

Although herbicides are essential for ensuring high crop yields, the development of sustainable formulations remains a challenge in modern agriculture. Herbicide use is typically affected by the poor water solubility of the compounds they contain, and so they are often applied at very high doses that exceed those needed for weed control (WC). Highly soluble herbicides allow application without the excessive formation of undissolved solids, but only a few routes have been developed for this purpose. Herein, a crystal engineering approach is presented for improving the solubility of the herbicide ametryn (AMT). Organic salts of AMT with fumaric acid (m.p. similar to 135 degrees C) and maleic acid (m.p. similar to 125 degrees C) were successfully prepared, providing substantial improvement in the solubility (10-fold and 20-fold, respectively), compared to pure AMT, along with thermal stability. Herbicidal activity tests confirmed the effectiveness of these systems, which showed good WC performance at 1 kg ha(-1), considerably below the 2.5 kg ha(-1) for AMT. The results demonstrate that these systems offer an accessible technology for reducing the use of AMT in agricultural practices and a strategy for the design of new WC chemistries. (AU)

• Processo FAPESP: 16/09198-6 - Desenvolvimento e caracterização de modificações sólidas de ingredientes agroquímicos de ação herbicida com menor impacto ambiental
• Beneficiário: Paulo de Sousa Carvalho Júnior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
• Beneficiário: Roberto de Campos Giordano
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• Processo FAPESP: 15/25694-0 - Obtenção, caracterização e avaliação de novas formas sólidas cristalinas de fármacos usados no tratamento da tuberculose
• Beneficiário: Luan Farinelli Diniz
• Modalidade de apoio: Bolsas no Brasil - Mestrado