Description

Osmium CAS NO 7440-04-2 is a dense, brittle, blue-gray transition metal belonging to the platinum group. It matters as one of the densest naturally occurring elements and is valued for its exceptional hardness and catalytic properties. This metal is needed by industries involved in specialized alloys, high-wear electrical contacts, and as a catalyst in critical chemical synthesis processes.

Application

• Alloying Agent: Used in minute quantities to impart extreme hardness and wear resistance to platinum alloys for fountain pen tips, instrument pivots, and electrical contacts.
• Catalysis: Serves as a catalyst in the synthesis of ammonia and in hydrogenation reactions, particularly in the OsO4 form for organic synthesis (dihydroxylation).
• Electronics: Employed in the production of filaments and coatings for specialized electronic applications due to its high melting point and stability.
• Medical Devices: Utilized in specific surgical implants, such as pacemakers and replacement heart valves, owing to its biocompatibility and durability.
• Research & Spectroscopy: Acts as a staining agent in electron microscopy and as a fingerprinting agent in forensic science.
• Historical Use: Previously used in incandescent lamp filaments and for producing the compound osmium tetroxide.

Basic Information

Product Name	Osmium
CAS No.	7440-04-2
Molecular Formula	Os
Molecular Weight	190.23 g/mol
Synonyms	Osmium metal; Osmium black; Osmium element; Osmium powder; Metallic osmium; Platinum group metal osmium; EINECS 231-114-0
EINECS	231-114-0

Quality Control

Our Osmium is produced and handled under stringent quality protocols to ensure high purity and consistency. We provide material in various purity grades, including high-purity forms suitable for research and industrial catalysis. A comprehensive Certificate of Analysis (COA) detailing purity, metallic impurities, and physical form is supplied with each batch to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Due to its property of being easily oxidized, it is recommended to store under an inert atmosphere (e.g., argon) to prevent surface oxidation. Store at room temperature (15-25°C) in a cool, dry, well-ventilated area away from incompatible materials.

Specification

Item	Specification
Appearance	Blue-gray metallic powder or solid
Assay (Metallic Osmium)	≥ 99.9%
Particle Size (for powder)	Customizable (e.g., -100 mesh, -325 mesh)
Trace Metals (ICP-MS)	Contact for details

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