Which symbol typically indicates an acid on a chemical label?

The symbol that typically indicates an acid on a chemical label is the corrosive icon or caution label. Acids can cause severe damage to living tissue and materials, which is why they are classified as corrosive substances. This icon often depicts a substance eating away at a surface, indicating the potential dangers associated with handling such chemicals.

Using the corrosive symbol on labels serves as a critical safety measure, informing individuals that the substance can lead to burns or destruction of materials. This awareness is essential in laboratory and industrial settings to prevent accidents and ensure proper handling procedures are followed.

In contrast, icons like the flammable icon denote the risk of fire, the toxic symbol signifies substances that are harmful if inhaled or ingested, and the explosive hazard sign indicates materials that can explode under certain conditions. Each symbol conveys specific hazards, but the corrosive icon is the one that directly correlates with the dangers posed by acids.