Description

Argon CAS NO 7440-37-1 is a colorless, odorless, and tasteless noble gas, chemically inert under most conditions. Its primary value lies in providing an inert, non-reactive atmosphere essential for protecting sensitive materials and processes from oxidation and contamination. This makes it a critical industrial gas for a wide range of applications, including welding, metal fabrication, electronics manufacturing, and analytical instrumentation.

Application

• Inert Gas Shielding: Provides a protective atmosphere for Tungsten Inert Gas (TIG) and Gas Metal Arc Welding (MIG) of reactive metals like aluminum, titanium, and stainless steel.
• Metal Production & Processing: Used as a blanketing gas in steelmaking (argon-oxygen decarburization) and aluminum refining to remove dissolved hydrogen and particulates.
• Electronics & Semiconductor: Creates ultra-pure inert environments for crystal growth (silicon) and sputtering processes in semiconductor and photovoltaic cell manufacturing.
• Analytical & Laboratory: Serves as the carrier gas in Gas Chromatography (GC) and Inductively Coupled Plasma (ICP) spectrometry.
• Lighting: Used to fill incandescent light bulbs and fluorescent tubes to prevent filament oxidation and control discharge characteristics.
• Food & Beverage: Employed as a modified atmosphere packaging (MAP) gas to displace oxygen, extending the shelf life of perishable foods.
• Pharmaceuticals: Provides an inert blanket during the manufacturing and packaging of oxygen-sensitive active pharmaceutical ingredients (APIs).
• Research & Development: Utilized as an inert medium for chemical reactions, Schlenk line techniques, and glove box operations.

Basic Information

Product Name	Argon
CAS No.	7440-37-1
Molecular Formula	Ar
Molecular Weight	39.95 g/mol
Synonyms	Argon gas; Gaseous Argon; UN 1006; UN 1951; Compressed Argon; Liquid Argon; Refrigerated Liquid Argon
EINECS	231-147-0

Quality Control

Our argon is produced and handled under a strict quality management system to ensure batch-to-batch consistency and reliability. We supply various grades, including Industrial, High Purity (5.0), and Ultra High Purity (6.0), each meeting relevant industry specifications. Certificates of Analysis (COA) detailing purity, moisture, oxygen, and other critical impurity levels are provided with every shipment to guarantee compliance with your process requirements.

Storage

Store cylinders in a well-ventilated, secure, and upright position in a dry area, protected from direct sunlight and weather extremes. Keep container valves tightly closed when not in use. Storage temperature should not exceed 52°C (125°F). Separate from flammable materials and oxidizing gases. Use appropriate pressure-regulating equipment designed for inert gases.

Specification

Item	Specification
Appearance	Colorless, odorless gas
Identification (GC/MS)	Complies
Assay (Argon Purity)	≥ 99.998% (High Purity Grade)
Oxygen (O₂)	≤ 5 ppmv
Nitrogen (N₂)	≤ 15 ppmv
Moisture (H₂O)	≤ 3 ppmv
Total Hydrocarbons (as CH₄)	≤ 1 ppmv
Carbon Dioxide (CO₂)	≤ 1 ppmv

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