DubaiAmateurRocketry
National Hazard
Posts: 841
Registered: 10-5-2013
Location: LA, CA, USA
Member Is Offline
Mood: In research
|
|
Hydrazine dinitramide
This compound have an insane density !
http://link.springer.com/article/10.1023%2FA%3A1011362427996...
Hydrogen bonding/crystal packing of this salt (Hydrazinium dinitramide [N2H5+] [N(NO2)2-]) have a density of 1.848!, almost 1.85, its brother ammonium
dinitramide, with less nitrogen and hydrogen by weight, have a density of only 1.81.
I have yet to find Hydrazinium dinitramide's impact sensitivity and other characteristics such as HOF etc. However, I guess hydrazine dinimitrade's
impact sensitivity will not be too high.
Hydrazine dinitramide's OB is a good +17.3%
More over it have much higher gas production than ADN while having more density, this is remarkable and hydrazine dinitramide might see some potential
with this amazing crystal density if the impact sensitivty/ compatibility/ etc, are all in acceptable terms.
|
|
|
Dany
Hazard to Others
Posts: 482
Registered: 3-8-2013
Member Is Offline
Mood: No Mood
|
|
DAR,
Hydrazinium dinitramide appears in a report published in 1993. SRI international developed this compound that bear the code name
SRI-13.
From this report, the crystal density of SRI-13 is 1.83 g/cm3 (obtained by X-ray diffraction). The estimated heat of
formation is -8 kcal/mol. According to this report, SRI-13 has no practical uses due to it's high impact sensitivity.
here's the 110 pages report:
http://www.dtic.mil/dtic/tr/fulltext/u2/a261496.pdf
Dany.
|
|
|
DubaiAmateurRocketry
National Hazard
Posts: 841
Registered: 10-5-2013
Location: LA, CA, USA
Member Is Offline
Mood: In research
|
|
Thanks for finding that, how much sensitivity is ''no practical use''? The density still seems amazing, its one of the few salts of hydrazine that
out-dense the ammonium derivative.
How true is this paper? This paper also mentioned that hydroxylammonium dinitramide is a liquid ?!
But check this out.
Shows that hydroxylammonium dinitramide is a solid, they said evaporated the dryness and precipitate with ether. A liquid does not ''precipitate''.
http://link.springer.com/article/10.1023%2FA%3A1011362427996
and this, how do they get the crystal data and everything if it was a liquid?
Impact sensitivity can be droped sometimes on different crystal size/ shape/ or they might had some impurities that effected the impact test, Any
ways, hydrazine dinitramide probably does have a high impact sensitivity. Can you find any other paper or literature that stats its sensitivity ?
I also think the real density could be closer to this paper since this paper is devoted to the crystal and bonding of this compound. They also seem to
have some good data and equipment too.
[Edited on 13-3-2014 by DubaiAmateurRocketry]
|
|
|
Dany
Hazard to Others
Posts: 482
Registered: 3-8-2013
Member Is Offline
Mood: No Mood
|
|
Quote: Originally posted by DubaiAmateurRocketry  | Thanks for finding that, how much sensitivity is ''no practical use''? The density still seems amazing, its one of the few salts of hydrazine that
out-dense the ammonium derivative.
How true is this paper? This paper also mentioned that hydroxylammonium dinitramide is a liquid ?!
But check this out.
Shows that hydroxylammonium dinitramide is a solid, they said evaporated the dryness and precipitate with ether. A liquid does not ''precipitate''.
http://link.springer.com/article/10.1023%2FA%3A1011362427996
and this, how do they get the crystal data and everything if it was a liquid?
Impact sensitivity can be droped sometimes on different crystal size/ shape/ or they might had some impurities that effected the impact test, Any
ways, hydrazine dinitramide probably does have a high impact sensitivity. Can you find any other paper or literature that stats its sensitivity ?
I also think the real density could be closer to this paper since this paper is devoted to the crystal and bonding of this compound. They also seem to
have some good data and equipment too.
[Edited on 13-3-2014 by DubaiAmateurRocketry] |
before replying to thread, learn to read well the valuable information in your hand. Nothing weird between two sources that state two physical state
for the same compound...this may happen during synthesis, you obtain a liquid that crystallize with time or vice-versa...
pay attention to what compound they took the crystal density. The compound is Hydroxylammonium-Hydroxylamine Dinitramide and not
Hydroxylammonium Dinitramide...big difference.
"no practical uses" for the application intended by the author (e.g., rocket propellant...) or no practical uses in general, like nitrogen triiodide
which is very sensitive and thus has no practical uses...
Finally, the big question: How true is this paper?
well, first this is a report and not a paper, learn to distinguish between the two.
The report is without doubt a true report made by a reliable source, SRI international...
Dany.
|
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
