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

Printable Version  
Author: Subject: DNPA
HMTD master
Harmless
*




Posts: 3
Registered: 16-4-2003
Location: Brisbane, QLD, Australia
Member Is Offline

Mood: pessimistic

biggrin.gif posted on 21-4-2003 at 22:29
DNPA


I was looking through my wonderful chemical closet, and I have got all the ingredients to make DNPA (DNPA is the acronym for 4,4-dinitropimelic acid, another name is 4,4-dinitro-1,7-heptanedioic acid) does anyone have any experiance with this compound? any help/suggestions are welcomed.

all I could find about it was http://roguesci.org/megalomania/explo/DNPA.html but I hav heard of it in other places.

Bryan




\"Look Ma, No Brains!\"
View user's profile View All Posts By User
Krypton
Hazard to Self
**




Posts: 90
Registered: 21-11-2002
Location: Spain
Member Is Offline

Mood: explosive 21

[*] posted on 22-4-2003 at 02:50


It`s a wonderful waste preparing DNPA
by this method over many steps with the
mono-potassium salt of trinitroethanol !!!

:cool::cool::cool:




In convention with my ancestor.
View user's profile View All Posts By User
fluffy bunny
Harmless
*




Posts: 25
Registered: 17-10-2002
Location: Australia
Member Is Offline

Mood: No Mood

[*] posted on 22-4-2003 at 18:11


Sorry this post isn't very helpful, i don't know anything about the synthesis of DNPA, but how did you find potassium dinitroethanol?
View user's profile Visit user's homepage View All Posts By User
HMTD master
Harmless
*




Posts: 3
Registered: 16-4-2003
Location: Brisbane, QLD, Australia
Member Is Offline

Mood: pessimistic

[*] posted on 23-4-2003 at 00:30
potassium dinitroethanol


It's in a very old looking bottle

I think it came from my old school labs (along with half my pyrex) That probalbly doesn't help.




\"Look Ma, No Brains!\"
View user's profile View All Posts By User
Madog
Hazard to Others
***




Posts: 221
Registered: 20-5-2002
Location: USA
Member Is Offline

Mood: lysergic

[*] posted on 23-4-2003 at 08:30


lol

that must be tough to make. doesnt ethyl nitrate decompose from water or something like that?




Most people outgrow their pyro tendencies, we are the ones who\'s tendencies outgrew us.
View user's profile Visit user's homepage View All Posts By User This user has MSN Messenger
Krypton
Hazard to Self
**




Posts: 90
Registered: 21-11-2002
Location: Spain
Member Is Offline

Mood: explosive 21

smile.gif posted on 23-4-2003 at 12:44


Potassium dinitroethanol, the potassium salt

(NO2)2=CK-CH2-OH

of trinitroethanol

(NO2)3C-CH2-OH


I think there is something sloping between the electron
bonds (NO2) of the formula and the drawing !?!

http://roguesci.org/megalomania/explo/DNPA.gif

[ -C- --- NO2 <<< NO2 ] ; C7H10N2O8 ?

---> C7H12N2O8


:P




In convention with my ancestor.
View user's profile View All Posts By User
Krypton
Hazard to Self
**




Posts: 90
Registered: 21-11-2002
Location: Spain
Member Is Offline

Mood: explosive 21

[*] posted on 1-6-2003 at 12:47
appendix to my last post


This is actually not the right product :mad::mad:
to the post but a tetranitrate of
ethanol can exist.

1-nitroxy-2,2,2-trinitroethane
(NO2)3C-CH2-ONO2

or a synthesis with p-dioxane to

4,4-dinitropimelyl chloride
[C10H12N4O12]:P

I think you should deactivating the
vbs scrips in the browser when
visiting roguesci.org :):)




In convention with my ancestor.
View user's profile View All Posts By User
PHILOU Zrealone
International Hazard
*****




Posts: 2880
Registered: 20-5-2002
Location: Brussel
Member Is Offline

Mood: Bis-diazo-dinitro-hydroquinonic

smile.gif posted on 5-6-2003 at 14:18


Why bother with DNPA when you have DNEthanol?

K DNEthanol --> trinitropyridine N-oxyde by a complexe trimerisation reaction.

(O2N)2CH-CH2OH has two (three in reality) acidic protons!
The H of the C is in equilibrium with the HO-N(O)=C aciform.And against all thinking the H of the alcohol has an increased acidity because of the two strong elecron withdrawing nitrogroups in alfa position to the -OH!

If we think intelligently to the problem:
(O2N)2CH-CH2OH + CH2=O --> HOCH2-C(NO2)2-CH2OH
Formol addition to the H of a primary carbon holding a nitro (or more).
We thus have 2,2 dinitropropandiol what allow one to make the extremely powerful and dense O2NO-CH2-C(NO2)2-CH2-ONO2 (maybe cristalline) and displaying a positive OB --> plasticiser or additive superfuel possible!

(O2N-)2C(-CH2OH)2 + 2HCl + ZnCl2 --> (O2N-)2C(-CH2Cl)2 + 2H2O
(Gringnard reagents offer a lot of ways to DNPA but there are other ways)
(O2N-)2C(-CH2Cl)2 +2NaCN --> (O2N-)2C(-CH2-CN)2 + 2 NaCl
(O2N-)2C(-CH2-CN)2 +H2O/H(+)/heat --> (O2N-)2C(-CH2-CO2NH4)2 (dinitropentandioique acid!)
(O2N-)2C(-CH2-Cl)2 + 2Me-O-CO-CH2-CO-OMe -MeONa-> (O2N-)2C(-CH2-CH2-CO2H)2 + 4MeOH + 2CO2 + 2NaCl.+ (O2N-)2C(-CH2-CH2-)2CH-CO2H (as a side product)

Dimetlyl malonic ester synthesis makes wonders!


:cool::cool::cool:




PH Z (PHILOU Zrealone)

"Physic is all what never works; Chemistry is all what stinks and explodes!"-"Life that deadly disease, sexually transmitted."(W.Allen)
View user's profile View All Posts By User

  Go To Top