According to NFPA hazard warning, which statement is inaccurate regarding the provided information?

The statement regarding the necessity to dilute the substance with water is inaccurate because not all hazardous materials require dilution for safe use. In fact, some substances can react dangerously when mixed with water, potentially leading to a release of heat, toxic gases, or even explosions. Therefore, it is essential to know the specific properties and safe handling protocols for each chemical, rather than making a blanket assumption that dilution is always necessary.

In contrast, the other statements align with recognized hazards. The indication that a substance poses extreme danger to the health of workers highlights its toxicity or potential health risks, which is a common evaluation under the NFPA hazard framework. Similarly, a flashpoint below 73 degrees Fahrenheit indicates that the substance is flammable and poses fire risks under standard conditions. Finally, the potential for violent chemical changes is consistent with the behaviors of certain hazardous materials, especially those that may be reactive or unstable in certain situations. Hence, the classification and handling of these materials must follow specific guidelines to ensure safety.