Question

What is the purpose of the signal word?

1) Indicates the product's relative acute toxicity to humans and animals.
2) Informs the user what type of PPE to wear.
3) Tells the user what type of first aid treatment to seek in case of exposure.
4) Cannot be determined from the given information.

Answer 1

The purpose of a signal word is to indicate the relative acute toxicity of a substance to humans and animals, serving as an immediate alert about its potential hazard level.

Step-by-step explanation:

The purpose of the signal word is to indicate the product's relative acute toxicity to humans and animals. It provides immediate understanding of the potential hazard level of a substance, chemical, or product, even before looking at the detailed hazard information. A signal word can be found on product labels and safety data sheets, helping to alert individuals to the potential dangers of handling or being exposed to the substance. Important hazard identification systems, such as the National Fire Protection Agency (NFPA) 704 Hazard Identification System, use standardized symbols and numerical ratings to convey hazards concerning flammability, reactivity, health, and other special conditions like corrosiveness or radioactivity. Knowing these ratings is essential for ensuring safety in environments where hazardous materials are handled, such as laboratories.