Question

Which one of these statements about carbon tetrachloride fire extinguishers is TRUE?

A) They are used primarily for Class A fires.
B) They are similar to Class D extinguishers.
C) They are among the best multi-class extinguishers.
D) They are prohibited from use by OSHA.

Answer 1

Carbon tetrachloride fire extinguishers are prohibited by OSHA due to the toxic gases such as phosgene that forms when it decomposes, as well as other health risks.

Step-by-step explanation:

The statement about carbon tetrachloride fire extinguishers that is TRUE is: 'They are prohibited from use by OSHA.' Carbon tetrachloride was formerly used in fire extinguishers for electrical fires, but it has been discontinued due to the formation of toxic gases such as phosgene (Cl₂CO) when it decomposes under high temperatures. The health risks associated with exposure to the toxic byproducts, which include severe liver damage and the potential for being a carcinogen, led to the prohibition of carbon tetrachloride in fire extinguishers.