... acid and hot sulfuric acid, It also can be dissolved in the mixture with hydrofluoric acid and hydrochloric acid (sulfuric acid) ... .Titanium powder can increases the N, H, O, C content in air. Mixed with strong oxide can cause ... an explosion. Titanium powder is stable in room temperature, flammable in high temperatures, Combustion for the silver-white sparks.Granularity-20mesh, -40mesh ...