What are examples of white (special) NFPA 704 notations?

• A. Oxidizer, water-reactive, simple asphyxiant, or special symbols
• B. Poisonous, corrosive, flammable, or special symbols
• C. Explosive, radioactive, reactive, or special symbols
• D. Non-toxic, combustible, oxidizing agent, or special symbols

Answer: (A)

The correct choice highlights the types of information denoted by the white section of the NFPA 704 labeling system, which is specifically reserved for special hazards. This section allows for additional warnings about materials that pose unique risks beyond the standard categories of health, flammability, and reactivity.

The examples provided—oxidizer, water-reactive, and simple asphyxiant—are all pertinent descriptors that identify certain properties of hazardous materials. An oxidizer can enhance the combustion of other materials, water-reactive substances can dangerously react with water, and simple asphyxiants reduce the available oxygen in the air. These specific characteristics are crucial for first responders and those handling such materials to understand the potential hazards involved.

Other options listed in the question discuss various hazard classifications but do not pertain specifically to the white notation in the NFPA 704 system. For instance, while some may denote flammability or toxicity, they do not capture the specialized nature of hazards that the white notation aims to convey. Therefore, the selection of oxidizer, water-reactive, simple asphyxiant, or special symbols aligns accurately with the definition and purpose of the NFPA 704 special hazard indicators.