Description

Hafnium Oxide CAS NO 12055-23-1 is a high-purity, refractory ceramic material prized for its exceptional thermal stability and chemical inertness. Its primary value lies in enabling advanced technologies that require materials capable of withstanding extreme environments. This compound is essential for manufacturers and R&D facilities in the semiconductor, optical coating, and nuclear industries.

Application

• Gate Dielectrics in Semiconductors: A critical high-k dielectric material for advanced CMOS transistors, enabling continued device miniaturization.
• Optical Coatings: Used in multi-layer anti-reflective and protective coatings for lenses, laser components, and optical windows due to its high refractive index.
• Refractory Ceramics: Serves as a component in ultra-high-temperature ceramics (UHTCs) for aerospace components like leading edges and rocket nozzles.
• Nuclear Reactor Control Rods: Utilized for its high neutron absorption cross-section, making it effective in regulating nuclear fission reactions.
• Catalyst and Catalyst Support: Employed in specialized catalytic processes where thermal stability and specific surface properties are required.
• Specialty Glass Formulation: Added to glass compositions to increase refractive index, density, and resistance to devitrification.

Basic Information

Product Name	Hafnium Oxide
CAS No.	12055-23-1
Molecular Formula	HfO2
Molecular Weight	210.49 g/mol
Synonyms	Hafnia; Hafnium(IV) oxide; Hafnium dioxide; Hafnium sesquioxide; HfO2; C.I. 77991; Anhydrous hafnium oxide
EINECS	235-013-2

Quality Control

Our Hafnium Oxide is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical testing, including ICP-MS for trace metal analysis and XRD for phase identification, to meet the exacting standards of the electronics and advanced ceramics industries. Certificates of Analysis (COA) detailing purity, particle size distribution, and impurity profiles are available for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed to minimize exposure to atmospheric moisture and contaminants.

Specification

Item	Specification
Appearance	White to off-white powder
Assay (HfO2)	≥ 99.9%
Particle Size (D50)	Contact for details
Surface Area (BET)	Contact for details
Zirconium (Zr) Content	≤ 2.0%
Loss on Ignition (LOI)	≤ 1.0%
Trace Metals (ICP-MS)	≤ 100 ppm total

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.