# Guanidine nitrate

Guanidine nitrate
Identifiers
CAS number 506-93-4
PubChem 10481
ChemSpider 10049
EC number 208-060-1
Jmol-3D images Image 1
Properties
Molecular formula CH6N4O3
Appearance White solid
Density 1.436 g/cm3
Melting point 213 °C; 415 °F; 486 K
Solubility in water 160 g/l at 20 °C
Hazards
MSDS MSDS
EU classification O
R-phrases R20 R21 R22 R36 R38
NFPA 704
1
2
4
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Guanidine nitrate is a high energy fuel used in some gas generator and solid rocket propellant applications.

## Overview

Guanidine nitrate is the salt formed from guanidine and nitric acid. It has the chemical formula C(NH2)3NO3. 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 ($1.7 kN\ x\ \tfrac {s}{kg}$).[note 1]

## Safety

Hazards:

• May explosively decompose on shock, friction, or concussion.
• May explode on heating.
• On combustion, forms toxic and corrosive fumes including nitric acid and nitrogen oxides.
• The substance is a strong oxidant and reacts with combustible and reducing materials.

Routes of exposure:

• The substance can be absorbed into the body by ingestion.
• A nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

Effects of short-term exposure:

• The substance is severely irritating to the eyes and the skin.
• Harmful if inhaled, swallowed or absorbed through the skin.