[Molluscacide activity of a mixture of 6-n-alkyl salicylic acids (anacardic acid) and 2 of its complexes with copper (II) and lead (II)].
The molluscicide activity of hexanic extract from Anacardium occidentale L. (cashew) nut shell, of copper (II) complex, of lead (II) complex and anacardic acid has been compared in the laboratory in an attempt to obtain better stability than anacardic acid. This was obtained from the hexanic extract of the cashew nut shell by precipitation with lead (II) hydroxide or cupric sulfate plus sodium hydroxide or (II) cupric hydroxide followed by treatment of lead (II) complex with a diluted solution of sulfuric acid. Ten products of the mixture obtained were tested on adults snails of Biomphalaria glabrata at 1 to 10 ppm. The most active products were copper (II) complex, obtained by cupric sulfate plus sodium hydroxide, and anacardic acid (sodium hydroxide) which presented activity at 4 ppm. The anacardic acid's lead content was above the limits accepted by the United States standards.
Mendes
N M
NM
Centro de Pesquisas René Rachou/Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil.
de Oliveira
A B
AB
Guimarães
J E
JE
Pereira
J P
JP
Katz
N
N
D000818:Animals; D001700:Biomphalaria; D007854:Lead / Q000737:chemistry; D008975:Molluscacides / Q000138:chemical synthesis; D009942:Organometallic Compounds / Q000138:chemical synthesis; D012459:Salicylates / Q000138:chemical synthesis
D008975:Molluscacides; D009942:Organometallic Compounds; D012459:Salicylates; C025564:copper salicylate complex; D007854:Lead
Atividade moluscicida da mistura de ácidos 6-n-alquil salicílicos (ácido anacárdico) e dos seus complexos com cobre (II) e chumbo (II).