Used in combination with KClO4 for whistles, whistle rockets and burst charce additives. Whistle mix can also be coated on rice hulls for shell bust charges where it increases the combustion heat for higher star ignition reliability. Less hygroscopic than Sodium Benzoate or Salicylate. No need to grind for use. For superrior mixing, dissolve in the least amount of warm water, add oxidizer (usually KClO4), burn rate catalyst (usually 1% red iron oxide), mix well and allow to dry to a thick putty for pressing or ricing through a screen. Adding 2% mineral oil or glycerine will phlegmatize for pressing.