NT 141 (OTTO) Titanium hydride, Nanopowder, APS <100 nm, 99.9% Cas 7704-98-5 Cas 7704-98-5 - used as a laboratory reagent and as a blowing agent. NT 141 (OTTO) Titanium hydride, Nanopowder, APS <100 nm, 99.9% Cas 7704-98-5 - used in hard alloys, diamond tools and high-temperature alloys.