Editing Sodium bicarbonate (section)

===Fire extinguisher===
Sodium bicarbonate can be used to extinguish small grease or electrical fires by being thrown over the fire, as heating of sodium bicarbonate releases carbon dioxide.<ref name=arm>{{cite web|url=http://www.armhammer.com/basics/magic|title=Arm & Hammer Baking Soda – Basics – The Magic of Arm & Hammer Baking Soda|website=armandhammer.com|archive-url=https://web.archive.org/web/20090831133032/http://www.armhammer.com/basics/magic|archive-date=31 August 2009|url-status=dead|access-date=30 July 2009}}</ref> However, it should not be applied to fires in [[deep fryer]]s; the sudden release of gas may cause the grease to splatter.<ref name=arm/> Sodium bicarbonate is used in BC [[Fire extinguishers#Dry chemical|dry chemical]] [[fire extinguishers]] as an alternative to the more corrosive [[monoammonium phosphate]] in ABC extinguishers. The alkaline nature of sodium bicarbonate makes it the only dry chemical agent, besides [[Purple-K]], that was used in large-scale fire suppression systems installed in commercial kitchens.<ref name=":0">{{cite web |last=Voelkert |first=J. Craig |date=2015 |title=Fire and Fire Extinguishment - A Brief Guide to Fire Chemistry and Extinguishment Theory for fire Equipment Service Technicians |url=https://www.amerex-fire.com/upl/downloads/educational-documents/fire-and-fire-extinguishment-99cd88b2.pdf |archive-url=https://web.archive.org/web/20240531221055/https://www.amerex-fire.com/upl/downloads/educational-documents/fire-and-fire-extinguishment-99cd88b2.pdf |archive-date=2024-05-31 |access-date=22 Sep 2023 |pages=14–15}}</ref>

Sodium bicarbonate has several fire-extinguishing mechanisms that act simultaneously. It decomposes into water and carbon dioxide when heated, an [[Endothermic process|endothermic reaction]] that deprives the fire of heat. In addition, it forms intermediates that can scavenge the [[Radical (chemistry)|free radicals]] which are responsible for the [[Combustion#Reaction mechanism|propagation of fire]].<ref name=":1">{{Cite journal |last1=Liu |first1=Yang |last2=Zhang |first2=Yansong |last3=Meng |first3=Xiangbao |last4=Yan |first4=Ke |last5=Wang |first5=Zheng |last6=Liu |first6=Jiqing |last7=Wang |first7=Zhifeng |last8=Yang |first8=Panpan |last9=Dai |first9=Wenjiao |last10=Li |first10=Fang |date=April 2022 |title=Research on flame propagation and explosion overpressure of oil shale dust explosion suppression by NaHCO3 |url=https://linkinghub.elsevier.com/retrieve/pii/S0016236121026417 |journal=Fuel |language=en |volume=314 |pages=122778 |doi=10.1016/j.fuel.2021.122778|bibcode=2022Fuel..31422778L }}</ref> With [[Class B fire|grease fires]] specifically, it also has a mild [[saponification]] effect, producing a soapy foam that can help smother the fire.<ref name=":0" />