Description

Barium CAS NO 7440-39-3 is a soft, silvery-white alkaline earth metal with high chemical reactivity. Its primary commercial value lies in its powerful reducing properties and its role as a precursor for a wide range of barium compounds. This elemental metal is essential for manufacturers in the electronics, metallurgy, and specialty chemical synthesis industries seeking a high-purity metallic source.

Application

• Gettering Agent in Vacuum Tubes & Electronics: Used to remove trace gases (oxygen, nitrogen) to create and maintain high vacuums in electronic components.
• Metallurgical Alloying: Added to lead-based alloys (e.g., bearing metals) to increase hardness and mechanical strength.
• Chemical Synthesis Precursor: Serves as a starting material for producing various barium salts, including barium nitrate, carbonate, and chloride.
• Pyrotechnics and Fireworks: Provides intense green coloration in flares and fireworks when used in compound form.
• Spark Plug Alloys: Used in nickel-based alloys for electrodes to improve electron emission and durability.
• Research & Development: Employed in laboratories as a strong reducing agent in organic and inorganic synthesis.

Basic Information

Product Name	Barium
CAS No.	7440-39-3
Molecular Formula	Ba
Molecular Weight	137.33 g/mol
Synonyms	Barium Metal; Barium Element; Barium Ingot; Barium Stick; Barium Shot; Barium Granules; Barium, elemental; Baryum (French)
EINECS	231-149-1

Quality Control

Our barium metal is produced and handled under controlled conditions to ensure high purity and consistency. Quality is verified through advanced analytical techniques, including atomic absorption spectroscopy (AAS) and inert gas fusion analysis for oxygen/nitrogen content. A Certificate of Analysis (COA) detailing purity, metallic impurities, and physical form is provided with each batch to guarantee it meets your technical specifications.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly reactive nature, barium must be stored under an inert atmosphere (e.g., argon or mineral oil) to prevent oxidation and reaction with moisture in the air. Store in a cool, dry, well-ventilated area away from acids, oxidizers, and water sources.

Specification

Item	Specification
Appearance	Silvery-white metal, lump or stick
Assay (Ba)	≥ 99.5%
Identification (Reaction)	Conforms
Major Impurities (ICP-OES)
Strontium (Sr)	≤ 0.1%
Calcium (Ca)	≤ 0.05%
Iron (Fe)	≤ 0.01%
Silicon (Si)	≤ 0.01%
Aluminum (Al)	≤ 0.005%
Oxide Layer (Visual)	Minimal surface oxidation

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