Description

Tellurium Dioxide (CAS NO 7446-07-3) is a vital inorganic compound primarily used as a precursor in the production of tellurium-based materials. Its significance lies in its role as a key intermediate for manufacturing high-purity tellurium metal, semiconductors, and specialized glass formulations. This product is essential for industries including electronics, metallurgy, and specialty ceramics, where precise material properties are critical.

Application

• Semiconductor Manufacturing: As a crucial precursor for tellurium-containing compounds used in phase-change memory (PCM) and thermoelectric materials like bismuth telluride.
• Glass & Ceramics Industry: Used as an additive to impart specific optical properties, such as increased refractive index, and to create specialized glass for infrared optics.
• Metallurgy: Employed in the production of high-purity tellurium metal and as an alloying agent to improve the machinability of metals like steel and copper.
• Catalyst Synthesis: Serves as a starting material for catalysts used in oxidation and dehydrogenation reactions within the chemical industry.
• Research & Development: Utilized in academic and industrial labs for developing new electronic materials, photovoltaic cells, and nanotechnology applications.
• Pigment & Coloring Agent: Acts as a base for producing certain ceramic pigments and colorants.

Basic Information

Product Name	Tellurium Dioxide
CAS No.	7446-07-3
Molecular Formula	TeO2
Molecular Weight	159.60 g/mol
Synonyms	Tellurium(IV) oxide; Tellurous anhydride; Tellurium oxide; Paratellurite; Tellurium(4+) dioxide; Tellurium oxide (TeO2); Tellurium dioxide (TeO2); Tellurium(IV) dioxide
EINECS	231-193-1

Quality Control

Our Tellurium Dioxide is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous internal specifications, which typically include assay, heavy metal content, and loss on drying. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

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 away from incompatible materials such as strong acids and reducing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (TeO2)	≥ 99.0%
Loss on Drying (105°C)	≤ 0.5%
Chloride (Cl)	≤ 0.01%
Sulfate (SO4)	≤ 0.02%
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm

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