What is the main component of PKP?

The main component of PKP (Purple K Powder) is potassium bicarbonate. This agent is specifically formulated for extinguishing fires involving flammable liquids and gases, as well as for use on electrical fires. Its effectiveness comes from its ability to interrupt the chemical combustion process, thus stopping the fire.

The designation "Purple K" is derived from the purple color of the powder, which helps in visually identifying the agent during emergency situations. Additionally, the formulation is non-toxic and leaves no residue, making it suitable for various environments, including aircraft and other sensitive areas.

In contrast, the other options refer to different chemicals that are not the primary component of PKP, thus highlighting why they do not answer the question. For example, while potassium chloride and sodium bicarbonate are both used in various chemical applications, they do not share the same fire suppression properties or utility as potassium bicarbonate in the context of PKP.