Sodium Bicarbonate (NaHCO3) is used for which classes of fires?

Sodium Bicarbonate (NaHCO3) is used for which classes of fires?

• A. Monoammonium Phosphate
• B. Water
• C. Sodium Bicarbonate (NaHCO3)
• D. CO2

Answer: (C)

Sodium bicarbonate as a dry chemical extinguishing agent is designed for fires involving flammable liquids and energized electrical equipment. When heated, it releases carbon dioxide, which helps smother the flame by displacing some of the air, and it blankets the fuel surface, slowing heat transfer and disrupting the flame’s chemistry. Because of this combination, it is especially effective for Class B fires (flammable liquids) and Class C fires (electrical equipment). It isn’t the best choice for ordinary combustibles or metal fires, where other extinguishing agents are preferred. The key idea to take away is that this agent is used for fumes and components typical of liquid fuel and energized-fire scenarios—Class B and Class C.

Sodium bicarbonate as a dry chemical extinguishing agent is designed for fires involving flammable liquids and energized electrical equipment. When heated, it releases carbon dioxide, which helps smother the flame by displacing some of the air, and it blankets the fuel surface, slowing heat transfer and disrupting the flame’s chemistry. Because of this combination, it is especially effective for Class B fires (flammable liquids) and Class C fires (electrical equipment). It isn’t the best choice for ordinary combustibles or metal fires, where other extinguishing agents are preferred. The key idea to take away is that this agent is used for fumes and components typical of liquid fuel and energized-fire scenarios—Class B and Class C.