Guanidine nitrate is the chemical compound with the formula [C(NH2)3]NO3. It is a colorless, water-soluble salt. It is produced on a large scale as high energy fuel used as gas generator and solid rocket propellant applications. Its more official name is guanidinium nitrate, but the incorrect term guanidine nitrate is widely used.
3D model (JSmol)
CompTox Dashboard (EPA)
|Melting point||213 °C (415 °F; 486 K)|
|Boiling point||Decomposes below boiling point|
|160 g/l at 20 °C|
|Safety data sheet||MSDS|
|R-phrases (outdated)||R20 R21 R22 R36 R38|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Production and propertiesEdit
It has been used as a monopropellant in the Jetex engine for model airplanes. It is attractive because it has a high gas output and low flame temperature. It has a relatively high monopropellant specific impulse of 177 seconds (1.7 kN·s/kg).[note 1]
Guanidine nitrate's explosive decomposition is given by the following equation: H6N4CO3 (s) → 3 H2O (g) + 2 N2 (g) + C (s)
The compound is a hazardous substance, being an explosive and containing an oxidant (nitrate). It is also harmful to the eyes, skin, and respiratory tract.
- 1000 lbf/in2 (700 kPa) chamber pressure, 14.7 lbf/in2 (101 kPa) exit pressure, shifting equilibrium theoretical performance.