Purple K Dry Chemical is a high-performance extinguishing agent most effective for dealing with flammable liquid fires. Purple K is suitable for use on Class B and Class C fires. TYPICAL USES: For flammable liquid hazards in businesses such as retail stores, light manufacturing facilities, research facilities, auto dealerships, vehicle/aircraft/marine service centers, and manufacturing processes such as painting, dipping, and coating. Not UL Listed or suitable for use on fires involving cooking oil and grease. Not recommended for use on sensitive electronic equipment.