Difficulty is often encountered in incorporating more than 10% of powder into the aerosol. By utilisation of the wetting action of "Ethomeen" S/12 and "Ethomeen" T/12 at a concentration of 0.5-1% based on the weight of powder, the incorporation of 40% of the powder into the formulation is possible. The "Ethomeens" enable the organic propellant to wet the powder and results in a four-fold increase in powder bulk.
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