Which type of emulsions are characterized by water droplets dispersed in oil?

Invert emulsions are characterized by water droplets dispersed in oil. This means that the continuous phase of the emulsion is oil, while the dispersed phase consists of water droplets. In this type of emulsion, the oil serves as the medium in which the water is suspended, which can affect the formulation's properties and the behavior of the pesticide when applied.

Invert emulsions are particularly useful in certain applications where improved penetration and adhesion of the pesticide formulation is desired, as the oil phase can help solubilize hydrophobic active ingredients. Additionally, the distribution of water droplets within an oil phase can create unique interaction properties, making these emulsions favorable in specific scenarios, such as reducing the volatility of certain active ingredients or improving the stability of the product.

The other options refer to different types of emulsions or emulsifying agents that do not accurately describe the characteristic of water droplets being dispersed in oil. Water-based emulsions, for example, feature oil droplets dispersed in water, while direct emulsions are similar to water-based emulsions. Emulsifying wax serves as a stabilizing agent but does not specify the relationship between the phases in an emulsion.