Il s'agit d'un type de liquide copolymère silicone-polyéther à faible viscosité utilisé pour améliorer les performances de mouillage, d'épandage et de pénétration des produits chimiques agricoles. Il peut être utilisé comme ingrédient de formulation dans des herbicides et insecticides à feuilles larges solubles dans l'eau, des fongicides et des régulateurs de croissance des plantes, ou comme adjuvant de mélange en réservoir pour les produits chimiques appliqués par voie foliaire. 

Représentations

SW-253 Silicone Surfactant reduces the surface tension of aqueous agricultural mixtures significantly lower than is achievable with conventional nonionic surfactants. At concentrations as low as 0.01 percent, SW-253 Silicone Surfactant reduces surface tension below 23 dynes/cm, which produces very rapid wetting and spreading on hard-to-wet surfaces such as waxy leaves.

In addition to the rapid wetting and spreading, SW-253 Silicone Surfactant also greatly increases the uptake of chemicals into plant tissues. Adding SW-253 Silicone Surfactant to a herbicide tank-mix may significantly enhance its efficacy, particularly in the control of broadleaf weeds with water-soluble herbicides. The rapid uptake produces “rainfastness”; i.e., herbicides are not washed off by rainfall because they have penetrated into the plant surface.

Comment l'utiliser dans les formulations chimiques agricoles

SW-253 Silicone Surfactant may be used as an ingredient in formulations, provided all the ingredients are compatible. SW-253 Silicone Surfactant is stable in neutral aqueous formulations (pH=6.5-7.5), but will degrade rapidly in acidic or alkaline formulations. New product formulations should be thoroughly tested for performance and shelf stability before entering market.

Durée de vie utile et stockage

When stored below 40°C (104°F), SW-253 Silicone Surfactant has a shelf life of 36 months from date of manufacture.