.alpha.-H3PT 1343-93-7 AIDS-001671 AIDS001671 Dodecatungstophosphoric acid [H3(PO4)(WO3)12] H3 P W12 O40 polyoxometalate H3 P W12 O40, A Keggin type polyoxometalate Phosphotungstic acid Tungstate(3-), tetracosa-m-oxododecaoxo[m12-[phosphato(3-)-kO:kO:kO:kO':kO':kO':kO'':kO'':kO'':kO''':kO''':kO''']]dodeca-, trihydrogen Tungstophosphoric acid (H3W12O40P)