Molekula
Hafnium oxide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Hafnium oxide (HfO₂) is a high-performance ceramic material widely used in electronics, optics, and refractory applications for its excellent dielectric properties, thermal stability, and resistance to corrosion. It serves as a gate insulator in semiconductors, a high-index coating in optical lenses, and a refractory additive in high-temperature ceramics. CAS 12055-23-1, molecular formula HfO₂, molecular weight 210.48 g/mol. Stored at ambient conditions with no signal word required. Molekula supplies hafnium oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 2800 °C |
| Boiling Point | 5400 °C at 760 mmHg |
Source: PubChem CID 292779 (PAC Chemical Database)
Identification
| Property | Value |
|---|---|
| SKU | 90038365 |
| CAS Number | 12055-23-1 |
| IUPAC Name | dioxohafnium |
| EC Number | 235-013-2 |
| Molecular Formula | Hf02 |
| Molecular Weight | 210.48 |
| Exact Mass | 211.9364 |
| SMILES | O=[Hf]=O |
| InChIKey | CJNBYAVZURUTKZ-UHFFFAOYSA-N |
| InChI | InChI=1S/Hf.2O |
| PubChem CID | 292779 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2825.90.9000 |
| Tariff Code | 2825908590 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Bis(oxido)hafnium
- Hafnia
- Hafnia (HfO2)
- Hafnium dioxide
- Hafnium dioxide (HfO2)
- Hafnium oxide
- Hafnium oxide (HfO2)
- Hafnium Oxide Nanoparticle Dispersion
- Hafnium(IV) oxide
- Hafnotrast
- Hf 05
- Hf 05 (oxide)
- Nbtxr3
Frequently asked questions
What is hafnium oxide (HfO₂) commonly used for?
Hafnium oxide is primarily used in high-k dielectric layers for semiconductor manufacturing, optical coatings, and as a refractory material in high-temperature applications.
What is the chemical formula and molecular weight of hafnium oxide?
The chemical formula is **HfO₂**, and the molecular weight is **210.48 g/mol**.
How should hafnium oxide be stored?
Store hafnium oxide in a cool, dry place at **ambient conditions**, away from moisture and contaminants.
What purity grades of hafnium oxide does Molekula supply?
Molekula supplies hafnium oxide in **high-purity grades (typically 99.9%+)** suitable for semiconductor and advanced material applications.
Can Molekula supply hafnium oxide in bulk quantities?
Yes, Molekula can provide hafnium oxide in **bulk quantities**, with flexible packaging options depending on volume and application requirements.
What documentation is provided with a hafnium oxide order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.