99.99% tantalum pentoxide Ta2O5 sinter granule Our tantalum pentoxide has one category: sinter. The product in this picture is sinter granule. Applied in Filter; HR coating; Insulating coating We follow critical manufacture standards, quality assurance, welcome your consultation! Specifications Summary: Tantalum pentoxide(Chemical formula: Ta2O5) 1.sinter granule: 1-3mm; 3-5mm 2.color: grey 3.purity: 99.99% 4.package: 1KG/ bag 5.storage: avoid exposure to sunlight & acid keep dry Tantalum pentoxide properties: 1.cas no.: 1314-61-0 2.density (g/cm3): 8.7 3.melting point(,): 1800 4.refractive index at 550 nm: 2.16 5.evaporation source: RE, RS 6.applications: Filter; HR coating; Insulating coating.