In risk communication, what is the purpose of hazard pictograms and signal words on chemical labels?

• A. To indicate chemical color only.
• B. To quickly convey hazard severity and required precautions.
• C. To show the price.
• D. To indicate storage temperature only.

Answer: (B)

Hazard pictograms and signal words communicate risk quickly. The pictograms show the type of hazard a chemical presents (such as flammable, toxic, corrosive, or environmental harm), while signal words like Danger or Warning indicate how severe the hazard is. Together, they give an at-a-glance view of what to expect and what precautions are needed, guiding decisions about personal protective equipment, ventilation, safe handling, storage, and what to do in an emergency. They’re designed for fast understanding across languages and literacy levels, helping people act safely even in busy or unfamiliar environments. They aren’t primarily about color, price, or storage temperature; their main purpose is to convey hazard severity and required precautions.