This layer prohibits the supply of oxygen and thus helps to control the fire. Unlike common fire extinguishers, the carbon tetrachloride present in pyrene forms a protective layer around the area of the fire. Note: It is important to know the way pyrene fire extinguisher works. Carbon tetrachloride is an organic compound which has a chemical formula of $CC$ causes acute liver damage, kidney damage, and also damages the central nervous system. The company pioneered the use of carbon tetrachloride (CTC) to extinguish or control fires. The Pyrene Company Limited was the company that manufactured the fire extinguisher 'Pyrene'. So by th early 50s we see a dashed serial number that much is clear. It applies to the coating of internal components with a sulfide film to fight corrosion. A fire extinguisher is an equipment that is used to control or extinguish small fires in emergency situations. Serial number is: No P 831245 The OD colored decal Fire Gun that you have seen just says Pat pending. Based on this you can determine the composition of pyrene. Now compare the characteristics of the compounds mentioned in the options with the properties of pyrene. It does not cost you anything additional.Hint An attempt to this question can be made by determining the properties of pyrene used in fire extinguishers. Rating my professionalism using the 5-star system is the only way that JustAnswer recognizes experts and it closes the question. (That it is still fully functional means that it is an environmental hazard, and these are usually emptied before being sold so they are not combustible).Īgain, thank you! Is there any additional information that I can provide? If you provide an image I may be able to provide more specific guidance. Pyrene Fire Extinguisher Serial Number Cross Reference ANTIQUE early 1900's PYRENE VINTAGE FIRE EXTINGUISHER BRASS Newark NJ (EMPTY) 100.00.

Find an extinguishers model number: The model. Thanks for the question! Surprisingly, there has been no reference to these Pyrene serial numbers (see: ) although you can date them by style and type (since the patents were all confirmed around 1910 and these were produced much later).Īs for value, in good condition these sell for $45 to $65 typically, and they are often turned into lamps. Learn how to find the model number, serial number, or year of manufacture for a First Alert fire extinguisher.

Pyrene fire extinguisher serial number