What is Tin(II) fluoride?
'''Tin(II) fluoride''', also known as '''stannous fluoride''', is a [[chemical compound]]. Its chemical formula is SnF<sub>2</sub>. It contains [[tin]] and [[fluoride]] [[ion]]s. The tin is in its +2 [[oxidation state]]. ==Properties== Tin(II) fluoride is a colorless [[crystalline]] solid. It dissolves in water. It is a [[reducing agent]]. It can be [[oxidation|oxidized]] to solid [[tin(IV) fluoride]], which does not work for [[dentistry]]. ==Preparation== It is made by reacting [[tin]] or [[tin(II) oxide|its oxide]] with [[hydrofluoric acid]]. ==Uses== It is commonly used in [[toothpaste]]s as a source of fluoride ions. The fluoride ions react with the [[Tooth enamel|enamel]] of the [[tooth]], making it harder to attack by [[bacteria]]. It also stops [[gingivitis]]. Some [[mouthwash]]es have tin(II) fluoride in them. ==Related pages== *[[Tin(II) chloride]] *[[Tin(IV) chloride]] {{chem-stub}} [[Category:Tin compounds]] [[Category:Fluorine compounds]]