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