Silway 246D spray adjuvant is a polyether trisiloxane. In aqueous solutions, it gives super spreading and does dramatically reduces surface tension. Typically, Silway 246D spray adjuvant reduces the surface tension of aqueous agricultural mixtures significantly. At concentrations as low as 0.1 percent, Silway 246D spray adjuvant reduces surface tension below 22 mN/m, which produces very rapid wetting and spreading on hard-to-wet surfaces such as waxy leaves. Silway 246D spray adjuvant is nonionic in nature, making it useful with a broad range of agrochemical formulations.