| 摘要 |
1507513 Phosphine - developing pesticide DEUTSCHE GES FUR SCHADLINGSBEKAMPFUNG m,bH 2 June 1975 [11 Sept 1974] 23809/75 Heading A5E A phosphine - developing pesticide comprises magnesium phosphide and/or aluminium phosphide, a thermally decomposable material and polyethylene oxide having preferably a molecular weight of 4000-12000, It is preferred that the metal phosphide is present in the form of individual particles with a dense coating of the polyethylene oxide which delays atmospheric humidity from gaining access to the metal phosphide. The composition is preferably prepared in the form of tablets or pellets, a suitable decomposable material is ammonium carbonate and the conversion of the phosphide to phosphine may be enhanced by the addition of sodium oxide, sodium hydroxide or potassium hydroxide. |
