Are the contents of a dry chemical extinguisher toxic?

No.  Dry chemical extinguishers are usually filed with Mono-ammonium phosphate.  This is a non-toxic substance, however, large amounts of this powder in the air can cause breathing difficulties. Leave the area after discharging a dry chemical fire extinguisher.  Call 911 to ensure that the fire is completely extinguished.

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1. What type and size of fire extinguisher should I have?
2. Where should I store my fire extinguisher?
3. How do I use a fire extinguisher?
4. Are the contents of a dry chemical extinguisher toxic?
5. Where can I buy or service a fire extinguisher?