# High-Purity & Specialty Oxides Source: https://powdchem.com/products/ceramic-powders/high-purity-specialty-oxides/ Page type: Material category Advanced ceramic powders Specialty oxides for optical, electronic, ceramic and research requirements. Define which impurities matter, rather than relying on a purity label alone. [Browse 10 materials]() [Ask about supply]() [Image: Powder material specimens; appearance reference]() ## Choose a material ### Hafnium, niobium and tantalum oxides Define the assay basis and the impurities that matter to the process. A 4N or 5N label needs its calculation basis and analytical method. #### Hafnium dioxide powder Hafnium dioxide powder (HfO2) [Selection guide]() [Ask about this material]() HfO2 #### Niobium pentoxide powder Niobium pentoxide powder (Nb2O5) [Selection guide]() [Ask about this material]() Nb2O5 #### Tantalum pentoxide powder Tantalum pentoxide powder (Ta2O5) [Selection guide]() [Ask about this material]() Ta2O5 ### Tungsten, molybdenum and vanadium oxides Compare the specified oxide phase, oxygen stoichiometry and particle profile. Keep the complete formula when requesting a candidate. #### Tungsten trioxide powder Tungsten trioxide powder (WO3) [Selection guide]() [Ask about this material]() WO3 #### Molybdenum trioxide powder Molybdenum trioxide powder (MoO3) [Selection guide]() [Ask about this material]() MoO3 #### Vanadium pentoxide powder Vanadium pentoxide powder (V2O5) [Selection guide]() [Ask about this material]() V2O5 ### Other specialty oxides In2O3, GeO2, Ga2O3 and Bi2O3 are separate identities. Use critical impurity limits to compare analytical records, rather than the headline purity alone. #### Indium oxide powder Indium oxide powder (In2O3) [Selection guide]() [Ask about this material]() In2O3 #### Germanium dioxide powder Germanium dioxide powder (GeO2) [Selection guide]() [Ask about this material]() GeO2 #### Gallium oxide powder Gallium oxide powder (Ga2O3) [Selection guide]() [Ask about this material]() Ga2O3 #### Bismuth oxide powder Bismuth oxide powder (Bi2O3) [Selection guide]() [Ask about this material]() Bi2O3 ## Material selection guide Start with the material identity and process, then check the details on the proposed datasheet. **Identity & grade basis** Provide the exact oxide, phase and intended use. Clarify whether the stated assay is on a total-material or trace-metals basis. **Impurity specification** Name the critical contaminants and maximum limits. Request analytical methods and reporting/detection limits suitable for the decision. **Process & evidence** Connect particle size, moisture, phase and packaging to the intended process. Ask which data can be tied to a specific grade or batch. ## Before you choose **What does a 4N or 5N purity label leave unresolved?** The analytical basis, excluded components and individual impurity limits still need review. A nominal purity figure is not a complete specification for an optical or electronic process. **What does this directory cover?** Common oxide feedstocks, rare-earth oxides and stabilized zirconia remain separate to keep grade-selection tasks clear. ## What to include in your request A material name or reference datasheet is enough to start. Add any requirements you already know. - Exact oxide and phase - Purity basis and critical impurities - Analytical method and reporting limits - Particle profile, moisture and packaging ### Quantity, samples and documents Nike has no fixed minimum order. Tell us the quantity you need; we’ll check supplier pack sizes and any minimums. We’ll check the proposed grade, sample options, delivery timing and available batch documents. Include any essential COA, TDS or SDS requirements. [How we coordinate documents]() [Samples and testing]() [Send a material request]() ## Applications to explore. [**Electronics & Semiconductor Materials**Specialty compound, high-purity oxide and functional powder sourcing for electronic and optoelectronic material development.]() [**Advanced Ceramic Processing**Powder sourcing for forming, sintering and ceramic formulation. Match feedstock chemistry and architecture to the process you will run.]() [**Materials Research**A clearer starting point for comparing research powders, from a recognized formula to a tightly controlled experimental brief.]() ## Related material families. [**Oxide Powders**16 material directions]() [**Rare-Earth Oxides**16 material directions]() [**Electronic & Functional Ceramics**17 material directions]()