Which type of formulation contains more than 50% active ingredient and poses an inhalation hazard during mixing?

The formulation that contains more than 50% active ingredient and poses an inhalation hazard during mixing is the Water-Dispersible Granules (WDG). This type of formulation typically consists of small particles that can easily become airborne, especially during the mixing process. As they are handled, the fine granules can create dust, which can be inhaled by the applicator, leading to potential respiratory issues if proper precautions are not taken.

Water-Dispersible Granules are designed to dissolve in water to form a solution, allowing for effective application of the active ingredient. However, because they are finely ground and have a high concentration of the active substance, they present a higher risk of inhalation compared to other formulations, especially when mixed in large quantities.

In contrast, formulations such as Granules, Soluble Powders, and Pastes generally have different physical characteristics that either dilute the concentration of the active ingredient significantly or do not create dust that can be inhaled. Granules typically contain less active ingredient than WDGs and are designed for ground application, making inhalation less of a concern. Soluble Powders may produce some dust, but the concentration and physical properties differ from WDGs. Pastes have a thicker, more visc