While it will not react with any pyrotechnic chemicals, Titanium can spark if hit with other metals (especially steel) or against itself. Black powder compositions containing titanium, such as often used in fountains, are notably more sensitive than mixtures without titanium.
Titanium Sponge -20+80 mesh
Metallic titanium is used in pyrotechnics to produce bright white sparks of a superior quality. The particle size and shape of the titanium will affect the color and duration of the sparks, with smaller mesh producing smaller and shorter-lasting sparks. The effect of a titanium-fountain is superior to all effects that can be obtained with aluminum or magnalium for that purpose.