Health Hazard This symbol is for chemicals that may cause damage to health and is also known to mean caution. The symbol is an exclamation mark. This classification is the closest replacement to the previous harmful and irritant classifications.

The “Health hazard” symbol is included in the packaging of detergents, cleansers, bleaches, chlorine, and ammonia. It helps to avoid any dangerous mishaps while working with them. Substances under this category can cause adverse effects on health if it damages the ozone layer of the earth.