The title compound, {[Na(H2O)4]6[V 10O28]·2H2O}n , crystallized from a H2O/THF/CH3CN solution (pH ca 6) containing equimolar amounts of NaVO3 and N-(2-hydroxy-benz-yl)-N-(2-picol-yl)glycine. In the crystal structure, the deca-vanadate [V10O28] 6- anion ( symmetry) is coordinated, via four terminal oxide ligands of V centres, to two dinuclear [{Na(H2O)3} 2(μ-H2O)2]2+ units. Inter-connection of these aquasodium-ion-sandwiched deca-vanadates to chains parallel to [001] is effected by μ-[{Na(H2O)3} 2(μ-H2O)2]2+ units, bridging adjacent deca-vanadates via O=V. The structure is consolidated by an extensive network of O - H⋯O hydrogen bonds.