Description

Diatomic Sulfur (CAS NO 23550-45-0) is a fundamental, highly reactive allotrope of sulfur consisting of two covalently bonded sulfur atoms. This gaseous, highly volatile compound is a critical intermediate and reactive species in numerous high-temperature and plasma-phase chemical processes. It is essential for research and industrial applications in advanced materials synthesis, semiconductor manufacturing, and fundamental chemical kinetics studies.

Application

• Semiconductor & Electronics Manufacturing: As a reactive gaseous precursor in chemical vapor deposition (CVD) and atomic layer deposition (ALD) processes for creating thin-film metal sulfides.
• Advanced Materials Research: A key species in the synthesis of novel inorganic polymers, chalcogenide glasses, and sulfur-based nanomaterials.
• Chemical Kinetics & Combustion Studies: Used in fundamental research to model and understand reaction mechanisms in high-temperature environments, such as flames and planetary atmospheres.
• Catalysis Development: Serves as a reactive intermediate in the study and development of catalysts for desulfurization processes and other sulfur-involved transformations.
• Plasma Chemistry: Employed in plasma-enhanced processes for surface modification and the generation of reactive sulfur species for specialized applications.

Basic Information

Product Name	Diatomic Sulfur
CAS No.	23550-45-0
Molecular Formula	S2
Molecular Weight	64.13 g/mol
Synonyms	Disulfur; Sulfur Diatomic; Sulfur Dimer; S2; Disulfur Molecule; Sulfur (S2); Diatomic Sulfur Molecule
EINECS	Contact for details

Quality Control

Our Diatomic Sulfur is produced and handled under stringent conditions to ensure high purity and consistency for research and industrial use. While typically generated in situ for immediate use, we guarantee the quality of precursor materials and generation systems. Certificates of Analysis (COA) for source materials and system performance data are available upon request to support your quality assurance protocols.

Storage

As a highly volatile and transient gaseous species, diatomic sulfur (S2) is not stored in conventional containers. It is typically generated in situ from high-purity sulfur precursors under controlled conditions (high temperature, plasma, or vacuum) for immediate use in the target reaction or process. Source materials should be preserved in tightly closed containers, protected from light and moisture, in a cool, well-ventilated area.

Specification

Item	Specification
Appearance (Source Material)	High-purity sulfur or precursor as specified
Purity (S2 in gas stream)	Defined by generation method & conditions
Identification (IR / MS)	Conforms to structure of S2
Major Impurities (e.g., S, S4, S8)	Monitored and controlled
Generation Method	Thermal, Plasma, or Photolytic
Carrier Gas (if applicable)	High-purity Inert Gas (e.g., Ar, N2)

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