Dry Chemical Powder (DCP)

These extinguish the fire by interupting the chemical reaction of the fire triangle. Multipurpose DCP is effective for Class A, B, C fires. Creates a barrier between Oxygen element and Fuel element on Class A fires. Ordinary DCP is for Class B and C only.

Dry chemical fire extinguishers are by far the most common fire extinguishers . They can handle all three types of fires : combustible solids like wood or paper, combustible liquids like gasoline or grease, and electrical fires. The idea behind a dry chemical fire extinguisher is to blanket the fuel with an inert solid (similar to dirt or sand). A dry chemical extinguisher sprays a very fine powder of sodium bicarbonate (NaHCO3, baking soda), potassium bicarbonate (KHCO3, nearly identical to baking soda), or monoammonium phosphate ((NH4)H2PO4). These solids coat the fuel and smother the fire.

Dry Chemical Powder - Monoammonium Phosphate

Dry Chemical Powder - Monoammonium Phosphate - For Class A,B,C Fires

Dry Chemical Powder - Sodium Bicarbonate

Dry Chemical Powder - Sodium Bicarbonate - For Class B,C Fires

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