Sciencemadness Discussion Board

PETN synthesis question

Peroksit - 6-9-2012 at 01:46

Hi
English is poor
What else I need to add in terms of security?

For Safety protective goggles , gloves , Runaway nitration for 2 litre cold water )
1) Nitration mixture cooled in the fridge (temperature: - or 0C .. 2 hours cooled)
2) Beaker the ice bath and Pentaerythritol it each time be scored as 1gram ( temperature temperature 5-7 degrees will not be allowed to rise )
3) Last Pentaeritritol is adding . 10 minutes later Nitration mixture hot water bath put 25 minutes After 25 minutes, poured into cold water ( hot water bath 45 C )
4) Petn crystals wash with clear water . %1 sodium bicarbonate solition wash with petn crystals ( natural pH 7 pH is measured with pH paper )
5) PETN and Acetone is put in a glass container heated 50C ( hot water bath ) . PETN is After dissolving - PETN and acetone mixture poured cold water > crystals appeared )
6) PETN is filtered . PETN wash with water >>> Drying

hissingnoise - 6-9-2012 at 04:53

There's a long thread on PETN, here!

Peroksit - 6-9-2012 at 04:57

Quote: Originally posted by hissingnoise  
There's a long thread on PETN, here!

Thanks man
my english is bad
I do not understand fully: S

Peroksit - 8-9-2012 at 08:16

Which method must i use for recrystallization? ( to purify/clean acid residue better )



using 2.5 ml acetone for each 1 gram petn ( pentaerythritol tetranitrate )



First Acetone and sodium bicarbonate had heated to 50 C.



Then petn ( pentaerythritol tetranitrate ) was added gradually to this mixture.



2-3 minutes later after petn ( pentaerythritol tetranitrate ) was dissolved entirely, mixture is pured to cold water.





at this stage ( this step ) which percent of sodium bicarbonate (gram) must i put into / (add to) acetone?



This method is correct??? İs there anything wrong? Is there anything I should add?

Peroksit - 8-9-2012 at 22:46

I have a question
PETN Do explodes during recrystallization? Do you?

hyfalcon - 9-9-2012 at 04:44

My god man, use the edit button instead of triple posting!