Orthorhombic Ammonium Paratungstate
.jpg)
????? ????? ?? ???????? ???????, paratungstate ??????? ??? ???? ???? ?????? ???????. ???? ??????? paratungstate ??????? ?? ??????, paratungstate ??????? Orthorhombic ???? ????? ???? ????????? ??? ???? 323K. ???? ????????? ????? ? 323K, paratungstate ??????? monoclinic ?????. ?????? ????????, APT ????????? ??? ????? ????? ????? ?????.
??????????? ??????? paratungstate ?????? ?????? ?????: ??????? ??? 335K ? 376K, ?????? ???? ??????? ??????? ???? ?? ??? 475K, ??? ????? 563K ???? ?????? ??????? ??????? ?????, ??? 640K ?????? ??????? ??????? ????? ?????. ?? ????????? ???? 755K, ?? ???? WO3. ?????? ?????:
(NH4)10H2W12O40?10H2O = 12WO3 + 10NH3 + 12H2O




