Difference between revisions of "Nickel hydrazine nitrate"

From Sciencemadness Wiki
Jump to: navigation, search
Line 11: Line 11:
| ImageAlt =  
| ImageAlt =  
| ImageName =  
| ImageName =  
| ImageFile1 =  
| ImageFile1 = Nickel hydrazine nitrate structure.png
| ImageSize1 =  
| ImageSize1 = 300
| ImageAlt1 =  
| ImageAlt1 =  
| ImageName1 =  
| ImageName1 =  
| ImageCaption1 = Structure of the NHN coordination compound
| ImageFile2 =  
| ImageFile2 =  
| ImageSize2 =  
| ImageSize2 =  

Latest revision as of 16:47, 30 June 2020

Nickel hydrazine nitrate
Nickel hydrazine nitrate structure.png
Structure of the NHN coordination compound
IUPAC name
Nickel hydrazine nitrate
Other names
Nickel hydrazinium nitrate
Molar mass 278.69 g/mol
Appearance Purple solid
Odor Odorless
Density 2.129 g/cm3
Solubility Insoluble in alcohols, ether
-449 kJ/mol
Safety data sheet None
Related compounds
Related compounds
Hydrazine nitrate
Nickel(II) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Nickel hydrazine nitrate (NHN), is an energetic coordination compound having explosive properties in between that of primary and secondary, with the chemical formula [Ni(N2H4)3](NO3)2.



Nickel hydrazine nitrate decomposes violently, releasing nickel powder and combustion gases.


Nickel hydrazine nitrate is a purple solid, practically soluble in water.


NHN straddles the line between primary and secondary. Because of this it is a relatively safe explosive to work with having much less sensitivity to shock and friction (16.0 N) than Lead Azide (0.1N). Its detonation velocity is estimated around 7,000 m/s.[1]


Nickel hydrazine nitrate is not sold by chemical suppliers and has to be made.


Nickel(II) nitrate is added to an aqueous solution of hydrazine (hydrazine hydrate), which is kept heated to 65 °C, in order to allow hot filtration. The solution should be 'hot filtered' at 65 °C. Letting it cool down first and then filtering will give an inconsistent product. Approximately 0.1-1% of the total system by weight of dextrin may be added to increase the bulk density from 0.9 mg/cm3 to 1.2 mg/cm3. Successfully produced NHN will have a talcum powder-like consistency when dried without the need to crush the NHN. Unsuccessfully produced NHN will have the aspect of hard chunks that need to be crushed and then maintain a consistency of grains of sand. The latter is the result of mixing at a lower temperature and using alcohol instead of water as the mixing solution.[2][3][4]


  • Blasting cap



Nickel nitrate contains nickel and hydrazine, both which are harmful.


NHN should be kept in small amounts in small containers. While it's stable for long periods of time, it's best to use it as soon as possible.


Can be easily neutralized by safely detonating in a safe or remote area.


  1. http://www.chemikinternational.com/pdf/2011/01_2011/chemik_2011_65_1_24-27.pdf
  2. https://www.sciencedirect.com/science/article/pii/S0304389402002479?via%3Dihub
  3. https://onlinelibrary.wiley.com/doi/abs/10.1002/prep.19970220604
  4. http://nopr.niscair.res.in/handle/123456789/5478

Relevant Sciencemadness threads