What is a notable risk when handling wettable powders?

The notable risk associated with handling wettable powders is primarily their potential to create dust that can be easily inhaled. Wettable powders are formulated to dissolve in water, allowing them to be applied effectively as a pesticide or other treatment when mixed. However, because they are powders, they can generate significant dust when handled, especially during mixing or application. This dust poses an inhalation risk to those handling the materials, which can lead to respiratory issues if proper protective measures are not taken.

The handling of wettable powders requires caution in order to mitigate this risk. Appropriate personal protective equipment (PPE), such as masks, should be utilized to minimize exposure. Awareness of the dust generation potential during handling activities is crucial for safety.

In contrast, other options do not highlight the significant health risk in the same way. While wettable powders may clump if exposed to moisture for too long, this physical change does not directly pose an immediate health threat in the same manner as inhalation does. Similarly, they are specifically designed to be compatible with water; thus, the risk of incompatibility is not a concern. Lastly, while chemical reactions could theoretically occur under specific conditions, this is not a defining characteristic or notable risk of wettable powders in general handling scenarios.