High Purity Liquid Argon
Specifications
| Compund Requested | Spec | Units |
| Purity | >99.999 | % |
| H2 | <0.5 | ppm v/v |
| O2 | 1.5 | ppm v/v |
| N2 | 4 | ppm v/v |
| CH4 | 0.4 | ppm v/v |
| CO | 0.3 | ppm v/v |
| CO2 | 0.3 | ppm v/v |
| H2O | 3 | ppm v/v |
Product Description
Density
Liquid argon has a density of about 1.40 g/cm³ at its boiling point, which is significantly higher than that of its gaseous state. The density in the gaseous form at standard temperature and pressure (STP) is approximately 1.29 g/L.
Melting Point and Boiling Point
Argon's melting point is -189.2°C (-308.56°F), and its boiling point at 1 atm pressure is -185.7°C (-301.26°F). These low temperatures are essential for the liquefaction process and storage of argon in both laboratory and industrial contexts.
Refractive Index
Like other noble gases, liquid argon possesses a low refractive index. This characteristic is important in optical applications where the behavior of light within the medium is a critical factor.
Solubility
Liquid argon has a low solubility in water, which is advantageous in scenarios where it serves as a protective gas to prevent oxidation or other chemical reactions.
Chemical Properties
Argon is a colorless, odorless, and tasteless gas that is chemically inert under normal conditions. In its liquid state, argon maintains these inert properties, making it suitable for experimental environments that require a non-reactive medium.
Uses of Argon's Physical Properties
Welding and Cutting: Argon is used as a shielding gas in welding and cutting processes to protect metals from oxidation and contamination.
Lighting: Argon is used in some types of lighting, such as fluorescent and neon lights, to reduce the rate of filament evaporation and extend the life of the bulb.
Metal Processing: Argon is used in the metallurgical industry for processes such as annealing and refining of metals to prevent oxidation.
Scientific Research: Argon's inert nature makes it suitable for use in various scientific experiments and as a carrier gas in chromatography.
Cryogenics: Liquid argon is used as a cryogenic refrigerant in certain applications due to its low boiling point.
In summary, argon's physical properties—ranging from its low density and low melting and boiling points to its thermal conductivity and inert nature—make it a versatile element with a wide range of practical applications across various industries and scientific fields. Its unique characteristics have made argon an indispensable resource in many areas of modern life and technology.
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