Conventional obscurant smoke formulations contain hexachloroethane (HX), zinc oxide, and aluminum. This pyrotechnic reaction produces a large volume of zinc chloride which is a toxic substance – several tests have been performed demonstrating the toxic effects this substance has had on both the environment and upon human inhalation.
There are several alternative smoke formulations, and while many have been proven to be less toxic than the HX formulation they generally do not produce comparable pyrotechnics that overcome the drawbacks and disadvantages of the above-indicated HX formulation, while at the same time achieving comparable screening abilities.
As an improved alternative, Army scientists have developed a pyrotechnic formulation to generate a smoke screen for obscuring effects and for ground-to-air signaling which provides excellent smoke effects but produces less toxic products than the conventional formulations.
|Component||Parts by Weight||Approximate Particle Size|
|Hexachloroethane||30-40%||Less than 850 μm|
|Stannous Oxide||55-65%||Less than 150 μm|
|Aluminum||5-10%||Less than 45 μm|
- Achieves comparable screening coverage as the conventional zinc chloride containing formulation but with a more environmentally friendly and less toxic compound
- Final dead load and increment sizes can be individually specified for the different configurations for which the smoke formulation will be used
- Mixing of the components (hexachloroethane, stannous oxide, and aluminum) may be performed using a planetary mixer
- US patent 10,131,587 available for license
- Potential for collaboration with Army scientists