Description

Arsenic Hemiselenide CAS NO 1303-35-1 is an inorganic compound primarily known for its role in specialized semiconductor and optoelectronic research. This material is valued for its unique photoconductive properties and its relevance in the study of chalcogenide glasses and phase-change memory materials. It is a critical raw material for R&D laboratories and manufacturers focused on advanced materials science, infrared optics, and exploratory electronics.

Application

• Semiconductor Research: Investigated as a component in specialized thin-film transistors and photodetectors due to its semiconducting behavior.
• Infrared Optical Materials: Used in the development of chalcogenide glasses for infrared transmission lenses and sensors.
• Phase-Change Memory: Studied for potential application in non-volatile memory devices that utilize reversible amorphous-crystalline phase transitions.
• Photoconductive Coatings: Employed in experimental photoconductive layers for imaging and sensing applications.
• Chemical Vapor Deposition (CVD): Serves as a precursor for depositing arsenic-selenium containing thin films.
• Academic & Industrial R&D: A key compound for fundamental research in solid-state chemistry and materials science.

Basic Information

Product Name	Arsenic Hemiselenide
CAS No.	1303-35-1
Molecular Formula	As2Se3
Molecular Weight	386.72 g/mol
Synonyms	Arsenic(III) Selenide; Diarsenic Triselenide; Arsenic Selenide (As2Se3); Arsenous Selenide; Arsenic Selenide Black; Arsenic Sesquiselenide; Selenious Acid, Arsenic(3+) Salt (3:2)
EINECS	215-116-4

Quality Control

Our Arsenic Hemiselenide is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and high purity for research applications. Each lot is analyzed to confirm identity and composition. A comprehensive Certificate of Analysis (COA) detailing purity, physical characteristics, and trace element content is provided with every shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to the nature of chalcogenide compounds, prolonged exposure to moisture or extreme temperatures should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Dark gray to black crystalline solid or powder
Identification (XRD)	Conforms to structure
Assay (As2Se3)	≥ 99.9%
Trace Metals (ICP-MS)	< 100 ppm total
Particle Size (D50)	Contact for details

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