Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Pentaerythritol?
trinitrotoluene
Hazard to Others
***




Posts: 142
Registered: 17-10-2002
Location: California
Member Is Offline

Mood: paranoid

[*] posted on 28-12-2002 at 00:27
Pentaerythritol?


I was wondering does anyone has info no the synthesis on Pentaerythritol? Pyrotek used to sell that chemical but don't nomore.I had emailed them about it and they said " You need an ATF permit to order it". I did some searching and found meglomanias method but its too complicated. Does anyone have a method of synthesizing it?



TNT
View user's profile View All Posts By User This user has MSN Messenger
blazter
Hazard to Self
**




Posts: 71
Registered: 3-9-2002
Member Is Offline

Mood: No Mood

[*] posted on 28-12-2002 at 08:26


should be fairly simple to synthesize PE if you can get acetaldhyde. the other important precursor is paraformaldhyde which is fairly easily obtained as holding tank deoderizer, although it needs to be washed of dyes, oils and fragrances. The orgsyn method can be found here :

http://www.orgsyn.org/orgsyn/prep.asp?prep=cv1p0425

the complicated apparatus they show in there is probably not needed and the procedure could be modified as needed.
View user's profile View All Posts By User
Anarchist
Harmless
*




Posts: 19
Registered: 18-12-2002
Location: nowhere and everywhere
Member Is Offline

Mood: No Mood

[*] posted on 28-12-2002 at 10:31


These guys seem to carry it www.allchem.com except they don't say whether or not you need a license to order it.
View user's profile Visit user's homepage View All Posts By User This user has MSN Messenger
Aechaen
Harmless
*




Posts: 3
Registered: 20-5-2002
Location: soocity, summerland, USA
Member Is Offline

Mood: No Mood

[*] posted on 30-1-2003 at 18:10
Trioxane


Isn't paraformaldehyde avaliable as trioxane?
View user's profile View All Posts By User
KABOOOM(pyrojustforfun)
National Hazard
****




Posts: 254
Registered: 12-10-2002
Location: Iran (pseudoislamic dictatorship of)
Member Is Offline

Mood: exuviating!

[*] posted on 15-7-2003 at 18:51
Yes & No


as I had said before (u could search) trioxane is cyclic trimer of formaldehyde but paraformaldehyde or simply paraform is a polymer of formaldehyde with a number of 8-100 monomer HO(CH2O)H but sometimes paraform is sold under the name of trioxane.

<b>how much does alkalinity care?</b>
if it doesn't need to be very alkali then hexamin can be used in lieu of formaldehyde. boil away all the water then heat to near 260°C(mp of PE) so NH4OOCH dehydrates forming volatile formamide & H2O so u r left with PE in your container. sounds very easy comfortable and fast if it works. summarizing the whole reactions:
3 CH<sub>3</sub>CHO + 2 C<sub>6</sub>H<sub>12</sub>N<sub>4</sub> + 12 H<sub>2</sub>O => 3 C(CH<sub>2</sub>OH)<sub>4</sub> + 3 HCONH<sub>2</sub> + 5 NH<sub>3</sub>
View user's profile View All Posts By User
chemoleo
Biochemicus Energeticus
*****




Posts: 3005
Registered: 23-7-2003
Location: England Germany
Member Is Offline

Mood: crystalline

[*] posted on 25-8-2003 at 16:40


has anyone actually made it according to the orgsyn method (see earlier post)? cus I am thinking of doing so myself. starting materials are CH2O 37% and acetaldehyde in my case. ..
View user's profile View All Posts By User
BASF
National Hazard
****




Posts: 282
Registered: 5-11-2002
Member Is Offline

Mood: hydrophilic

[*] posted on 26-8-2003 at 05:10
Another one: the formaldehyde-"retro"-synth


Heat calcium formate.



View user's profile View All Posts By User
froot
National Hazard
****




Posts: 347
Registered: 23-10-2003
Location: South Africa
Member Is Offline

Mood: refluxed

[*] posted on 3-6-2005 at 04:00
Metaldehyde in place of acetaldehyde??


Found this: http://www.greatvistachemicals.com/agrochemicals/metaldehyde...

So metaldehyde ((CH3CHO)4) is basically polymerised acetaldehyde (CH3CHO), just like paraformaldehyde is of formaldehyde.
Any ideas on using it as an acetaldehyde replacement in the pentaerythritol synth? It is obtainable as snailbait, the only issue would be to purify it.
View user's profile View All Posts By User

  Go To Top