Fires that involve combustible metals such as magnesium, sodium, potassium, titanium, and aluminum can be extinguished by a certain type of dry chemical usually in dry powder form but usually fires which belong to classes A, B or C, can be addressed by an extinguisher filled with monoammonium phosphate, though this can be damaging to electrical appliances (Pulp and Paper Health and Safety Association, n.d.). This due to the fact that dry chemical agents also form a chemical reaction that changes chemical composition with the surface that it comes in contact with.
Finally, the chemicals used in dry chemical agents may have an adverse effect on the health of people who are exposed to the chemical itself. Monoammonium phosphate, as a residue, can be harmful to the health especially with the characteristic of dry chemicals to collect in a mass. This might be dangerous as it will be hard to breathe when the compound is inhaled and it attaches to the