znalazlem przepis na dppp ale trza to sprawdzic bo kolesie z tego forum sie cos haja o to czy tam powstaje ap czy dppp
preparation:
To a 1000 ml erlenmeyer flask add 185 ml of 20% HCl (i don`t
have 35% HCl at this time). To a second flask add 100 ml of aceton.
To an third flask add 200 ml of 30% H2O2. Cool all to 5 C.
After cooling, slowly add the aceton to the HCl and stir the mixture
for 5 minutes.(very slight yellow colouring over a few minutes)
The patent don`t say heat at this time and the patent don`t say
some product (poron) should precipitate from the solution at this time.
If you heat or not, the content of AP are always present at end of the synthesis. On the contrary, if you heat to much or to long, the reaction fails.
Cool the mixture to 5 C for 2 hours and stir occasionally.
After standing, set the mixture to magnetic stirring at room
temperature and slowly (over 10 minutes) add the H2O2 to the
aceton/HCl mixture. The temperature can rise over 40 C and
the mixture become a sligth green colouring.
(second reaction-step, formation of pentachlorporon and free
Cl with H2O2 as catalyst)
The DPPP should precipitate on top of the mixture and some fumes bubble of.
You can distinguish this of AP crystalls, which formes in the reaction-mixture and which are a bit larger than crystals of DPPP.
After all H2O2 is added, continue stirring for 2 hours an more till the liquid on the bottom of the flask are clear and no fumes bubble of.
Filter out the crystals, wash them with 1 L of 10 % sodium bicarbonate solution, and again with water.
Dry crystals of DPPP at room temperature for 48 hours.
The next step are very important to remove all traces of acid and AP in the product, that you can handle safe with DPPP.
Dissolving the crystals in minimum amount of hot ethyl alcohol (60 C),
let cool to 5 C, filter, add a large volume of cold distilled water, let sit for 1-2 hours below 10 C and filter again.
Let dry DPPP at room temperature for 1-2 weeks to decompose and evaporate the rest of AP on the air.
stronka
http://www.roguesci.org/theforum/showthread.php?t=364
a temat tak jakos sobie tu umiescilem
nie mam nic przeciwko temu aby zostal on przeniesiony no ogolnodostepne tylo ze wtedy ci co sie nie znaja (tak jak i my tu obecni
) beda wrzucali jakies tam info i kupe pytan a tak jak jest cos konkretnego (lub mniej) to sie tu pojawia
a aceton POLIMERYZUJE
bo tak jest w patencie a patentow nie pisze byle kto tylko czlek ktory wie co zrobil