Description

Tellurium is a rare, lustrous, brittle, silver-white metalloid element with unique semiconductor and alloying properties. Its primary commercial value lies in its ability to dramatically improve the machinability of metals like steel and copper, and its critical role in advanced electronics and photovoltaic technologies. This material is essential for manufacturers and researchers in the metallurgy, semiconductor, solar cell, and thermoelectric device industries seeking to enhance material performance and energy efficiency.

Application

• Metallurgy & Alloying: Key additive to steel, copper, and lead alloys to significantly improve machinability, strength, and corrosion resistance.
• Semiconductor Manufacturing: Used in cadmium telluride (CdTe) thin-film solar cells and in compounds like bismuth telluride for thermoelectric cooling devices.
• Rubber Vulcanization: Acts as a secondary vulcanizing agent and accelerator, improving the heat resistance and durability of synthetic rubber.
• Glass & Ceramics: Imparts blue to brown coloration and increases the refractive index in specialized optical glass and ceramics.
• Catalysis: Serves as a catalyst and catalyst support in various petrochemical and organic synthesis processes.
• Research & Development: Utilized in laboratories for synthesizing novel organometallic compounds and exploring new semiconductor materials.

Basic Information

Product Name	Tellurium
CAS No.	13494-80-9
Molecular Formula	Te
Molecular Weight	127.60 g/mol
Synonyms	Tellurium, elemental; Tellurium metal; Aurum paradoxum; Metallum problematum; Tellurium-128; Tellurium powder; Tellurium lump; Tellurium ingot
EINECS	236-813-4

Quality Control

Our Tellurium is produced and handled under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide material in various standard grades, including Industrial, High Purity (4N, 5N), and Semiconductor grades, with specifications tailored to your application. A comprehensive Certificate of Analysis (COA) detailing purity, metallic impurities, and physical characteristics is supplied with every shipment to guarantee compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. For long-term storage of fine powders, consider an inert atmosphere to minimize surface oxidation. Keep container tightly sealed when not in use to prevent contamination.

Specification

Item	Specification
Appearance	Silver-gray metallic lumps, powder, or ingots
Assay (Tellurium), min	99.9% (3N), 99.99% (4N), 99.999% (5N)
Identification (XRD)	Conforms to standard
Metallic Impurities (ICP-MS)	< 100 ppm total (Grade dependent)
Lead (Pb)	< 10 ppm
Iron (Fe)	< 10 ppm
Copper (Cu)	< 5 ppm
Selenium (Se)	< 20 ppm
Particle Size (Powder)	Customizable (e.g., -100 mesh, -325 mesh)

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