Which symbol would indicate materials that cause fire hazards from liquids?

The symbol that indicates materials causing fire hazards from liquids is specifically designed to represent flammable substances. This flammable liquid symbol typically features an icon that conveys the risk of ignition and combustion associated with these types of materials. It serves a crucial function in safety communication, ensuring that individuals handling or encountering these substances can recognize the potential dangers and take appropriate precautions to prevent fires and related incidents.

In contrast, other symbols mentioned pertain to entirely different hazards. The infectious symbol is used to signify materials that may contain pathogens, highlighting biological hazards rather than fire risks. The new radiation symbol indicates the presence of radioactive materials, which involves a different set of safety concerns. Lastly, the cytotoxic symbol is used to denote hazardous substances that can be harmful to living cells, particularly relevant in medical waste, but does not address flammable liquids. Therefore, the flammable liquid symbol is the clear choice for identifying fire hazards associated with liquids.