Na6 (P6 O18) (H2 O)6

H₁₂Na₆O₂₄P₆

McAdam, A.Jost, K.H.Beagley, B.

Acta Crystallographica B (24,1968-38,1982) (1972) 28, 2740-2743

a=11.58Å   b=18.54Å   c=10.48Å

α=90°   β=90°   γ=90°