The wet chemical extinguishing solutions are based on which chemical base?

The wet chemical extinguishing solutions are based on which chemical base?

• A. Sodium bicarbonate
• B. Ammonium phosphate
• C. Potassium carbonate based
• D. Calcium chloride

Answer: (C)

Wet chemical extinguishing solutions fight cooking-oil fires by chemically turning fats into a soapy layer that blankets the fuel and cools the surface. The base in this formulation is a potassium carbonate salt, which creates a strong alkaline environment that quickly saponifies fatty fuels on contact. The resulting potassium soaps spread over the surface, forming a cohesive film that both cools the oil and isolates it from air, making reignition much less likely. This approach is specifically designed for kitchen fires, where fats and oils are the primary fuels, and the carbonate-based system provides rapid, durable film formation with relatively good equipment compatibility in that environment.

Wet chemical extinguishing solutions fight cooking-oil fires by chemically turning fats into a soapy layer that blankets the fuel and cools the surface. The base in this formulation is a potassium carbonate salt, which creates a strong alkaline environment that quickly saponifies fatty fuels on contact. The resulting potassium soaps spread over the surface, forming a cohesive film that both cools the oil and isolates it from air, making reignition much less likely. This approach is specifically designed for kitchen fires, where fats and oils are the primary fuels, and the carbonate-based system provides rapid, durable film formation with relatively good equipment compatibility in that environment.