double salt

double salt

n.

A salt, such as alum, that ionizes in solution as if it were two separate salts but forms a single substance upon crystallization.

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double salt

A salt that crystallizes from an aqueous solution of a mixture of two different ions. The mineral dolomite (CaMg(CO₃)₂), for example, is a double salt that crystallizes from a solution containing both calcium and magnesium ions. Double salts exist only as solids. Compare complex saltsimple salt

Thesaurus

Noun

1.

double salt - a solution of two simple salts that forms a single substance on crystallization potash alum, potassium alum, alum - a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum alum, ammonia alum, ammonium alum - a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum potassium sodium tartrate, Rochelle salt, Rochelle salts - a double salt used in Seidlitz powder; acts as a cathartic salt - a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal) Paris green - a toxic double salt of copper arsenate and copper acetate primary solid solution, solid solution - a homogeneous solid that can exist over a range of component chemicals; a constituent of alloys that is formed when atoms of an element are incorporated into the crystals of a metal