The invention provides a stable metal zirconium phosphates having formula , in which X is a metal or a combination of metals selected from Co, Mn, Ni, Cu, {HEAD ~ Cd}, Fe, Cr, Al, Sn, V, Zn, Sc, Na, Mg, Ca and Si; and n has a molar value in {TAIL ~ the range} of 1.25 to 22 
The invention provides a stable metal zirconium phosphates having formula , in which X is a metal or a combination of metals selected from Co , Mn , Ni , Cu , { HEAD ~ Cd } , Fe , Cr , Al , Sn , V , Zn , Sc , Na , Mg , Ca and Si ; and n has a molar value in { TAIL ~ the range } of 1.25 to 22
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