ABC or Multi-Purpose extinguishers utilize a specially fluidized and siliconized mono ammonium phosphate dry chemical. It chemically insulates Class A fires (ex. wood, paper, trash, & cloth) by melting at approximately 350°F and coats surface to which it is applied. It smothers and breaks the chain reaction of Class B fires (liquids ex. gasoline, alcohol products, solvents, & oils) and will not conduct electricity back to the operator - Class C electrical fires.
