Ammonium phosphate fire extinguisher is suitable for Class A, B and C fires.

Rechargeable 5-lb monoammonium phosphate dry c...
Rechargeable 5-lb monoammonium phosphate dry chemical extinguisher. (Photo credit: Wikipedia)

Class A = Paper, wood or other common combustible materials

Class B = Flammable liquids, paints, or any liquid fire

Class C = Electrical fires

These fire extinguishers are pressurized with non-flammable gas.  When there is a fire and we operate the extinguisher the dry chemical power, Ammonium phosphate, will form a thin layer of coating over the burning material thus cut off the oxygen smothering the fire.

Pressurized dry chemical power fire extinguishers are classified under Class 2.2 UN Number 1044 in transport regulations.

Ammonium phosphate Fire Extinguisher at MIMS Hospital, Kozhikode, India

By shashi kallada

25 years in Merchant Shipping, Last 13 years working on Packaged Dangerous Goods Sailor, Ex Manager Global Dangerous Goods Maersk Line * Freelance Photographer *Amateur Cyclist

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