sesquicarbonate

noun ses·qui·car·bon·ate \ˌses-kwi-ˈkär-bə-ˌnāt, -nət\

Definition of SESQUICARBONATE

: a salt (as Na₂CO₃·NaHCO₃·2H₂O) that is neither a simple normal carbonate nor a simple bicarbonate but often a combination of the two

1825

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