Description

Selenium CAS NO 7782-49-2 is a non-metallic chemical element essential for numerous high-tech and industrial processes. Its unique photoconductive and semiconductor properties make it a critical material for advanced manufacturing and electronics. This versatile element is indispensable for industries including glass manufacturing, metallurgy, agriculture, and the production of photovoltaic cells and rectifiers.

Application

• Glass Manufacturing: As a decolorizing agent to neutralize green tint from iron impurities and as a colorant for producing red and pink glasses.
• Electronics & Photovoltaics: Key component in selenium rectifiers, photocells, xerographic drums, and thin-film solar cells (CIGS).
• Metallurgy: Alloying additive to improve machinability of stainless steel and copper alloys.
• Agriculture & Animal Nutrition: Essential trace element in animal feed supplements and fertilizers.
• Chemical Synthesis: Catalyst and reagent in organic synthesis and vulcanization processes.
• Dietary Supplements: Raw material for the production of selenium supplements (e.g., selenomethionine, sodium selenite).
• Pigments: Used in the formulation of cadmium sulfoselenide red and orange pigments.

Basic Information

Product Name	Selenium
CAS No.	7782-49-2
Molecular Formula	Se
Molecular Weight	78.96 g/mol
Synonyms	Selenium element; Selenium black; Selenium powder; Colloidal selenium; Selenium, metallic; Selenium dust; Gray selenium; EINECS 231-957-4
EINECS	231-957-4

Quality Control

Our Selenium is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and reliability. We offer various grades, including Technical, High-Purity (5N), and Pharmaceutical grades, with specifications meeting or exceeding industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Keep container tightly sealed when not in use to minimize dust formation and oxidation.

Specification

Item	Specification
Appearance	Gray to black powder or pellets
Identification (IR)	Conforms
Assay (Se)	≥ 99.5% - 99.999%
Iron (Fe)	≤ 10 ppm
Copper (Cu)	≤ 5 ppm
Lead (Pb)	≤ 5 ppm
Tellurium (Te)	≤ 10 ppm
Sulfur (S)	≤ 50 ppm

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