???? ???????? Hexamethylene ????? paratungstate ??????? (APT) ??? ??? ??? ?? ?? ???? ???? ?? ????? ????????? ?? paratungstate ???????, ??? ?? ???? ????? ?? ??????? ??????? ????? ??????? ??????? ???? ?????. ????? ?????? ?? ?????? ??????? ? tetramine hexamethylene ?? ??? ????? tetramine hexamethylene ???? ????? ??????? ???????, ??? ???? ?? ????? ?? ?????? ??? ??? ???? ?? ?????? ???? ??????? ???????, ??? ??? ????? ?? ??????? APT ??? ?????. ????? ?????? ??? ???:

1. ???? hexamethylene tetramine ???? ????? ??????? ??????? ??????, ??? ???? ?????? ?? tetramine hexamethylene: ??????? ??? 0.5 ~ 1.0, ????? ??? ?????? ?? ???? pH ? 1.5 ~ 1.5 ?? ??? ????? ???????, ????? ????????? ?????? ???? 20 ????? ??????, ??? ???? ???? ????? ?? ?????? ?????? ??????? ??????? ? tetramine hexamethylene;
2. ?????? ?? ?????? ??????? ??????? ?? ??????? ? hexamethylene tetramine ?????? ?? ???? ??? ??????? ?? ??? ????? ?? ????? ?? decanted;
3. ????? ?? ?????? ??????? ??? ?????? ??? ???? ?? ?????? ???? ??????? ???? ????? ?? ??????? hexamethylene;
4. ?????? ?? ?????? ???? ???????? ??????? 90 ~ 100 ????? ?????? ?? ??? ?????? ????? ? -25% ????? ??????, ???? ????? ?????? ????? ???? ????? ?? paratungstate ???????, ???? ?? tetramine hexamethylene ????? ????? ???? ??.

?????? ???? ?? ??? ?? ?? ???? hexamethylene tetramine ????? paratungstate ??????? ???? ??????? ? 95% ?? ???????; ???????, ?? ??? ????? ??? ?- pH, ??????? ?????? ?? ??? ????? ???? ????? ???? ???????; ?????, ???? ?? ???? ????? ???????, ???? ???? ????? ???? APT ???? ?????.