Which signal word typically indicates a product is slightly toxic?

The signal word that usually indicates a product is slightly toxic is "Caution." This term is used in labeling to communicate that the substance may cause minor injuries or adverse effects if handled inappropriately but is not expected to be highly dangerous under normal circumstances.

In the context of hazard communication, signal words are a regulatory requirement that helps users quickly understand the level of risk associated with a chemical product. "Caution" suggests a lower level of toxicity and implies that users should be careful but that the risk is not severe.

Other words like "Warning" and "Danger" denote higher levels of toxicity or risk. While "Warning" indicates a moderate hazard, "Danger" implies a significant risk, generally associated with severe toxicity or other serious dangers. The term "Hazard," while related, doesn't specifically categorize the level of toxicity in the same way that the other signal words do. Thus, "Caution" is the appropriate choice for identifying products that are classified as slightly toxic.