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Xenon

Updated: 2026-08-06

Overview

Xenon gas (Xe) is a heavy noble gas discovered in 1898 by Sir William Ramsay and Morris Travers. It is extracted from the Earth's atmosphere, where it exists in trace amounts (approximately 0.087 ppm). Due to its inert nature and unique physical properties, xenon has found specialized applications across industries, including lighting, medical technology, and aerospace. Unlike reactive gases, xenon does not form compounds under normal conditions, making it ideal for environments where chemical stability is critical. Its ability to emit bright white light when electrified has made it a preferred choice for high-intensity discharge (HID) lamps and flashbulbs.

Physical and Chemical Properties

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Xenon is a colorless, odorless gas with a high atomic weight (131.29 g/mol) and density (5.894 g/L at STP). It remains gaseous at room temperature but can be liquefied under moderate pressure. Notably, xenon exhibits exceptional electrical conductivity when ionized, a property exploited in plasma displays and ion thrusters for spacecraft. Despite being chemically inert, xenon can form compounds with highly electronegative elements like fluorine under extreme conditions. Its solubility in water is minimal (approximately 108 mg/L at 20°C), and it has a low thermal conductivity, making it useful as an insulating gas in specialized applications.

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Main Applications

The largest industrial use of xenon is in lighting, particularly xenon arc lamps for projectors, automotive HID headlights, and stadium lighting. These lamps produce intense, daylight-like illumination with high color rendering. In medicine, xenon serves as a contrast agent in MRI scans and as an anesthetic due to its neuroprotective properties. Aerospace applications include ion propulsion systems for satellites, where xenon's heavy ions provide efficient thrust. Additionally, xenon is used in nuclear energy as a neutron absorber and in experimental physics for particle detection. Emerging uses include quantum computing and hyperpolarized MRI research.

Safety and Storage

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Xenon is non-flammable and non-toxic but poses an asphyxiation risk in confined spaces by displacing oxygen. Cylinders should be stored upright in well-ventilated areas away from heat sources. Leaks can be detected using soap solutions or gas detectors, though xenon's lack of odor makes visual inspection critical. Personal protective equipment (PPE) such as gloves and safety glasses is recommended when handling high-pressure cylinders. In case of exposure, move to fresh air immediately. Unlike reactive gases, xenon does not require corrosion-resistant materials for storage, but valves and regulators must be rated for inert gas service.

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B2B Procurement Guide

When procuring xenon gas, prioritize suppliers with ISO certifications and traceable purity documentation. Industrial-grade xenon typically requires 99.995% purity, while specialty applications (e.g., medical or aerospace) may demand 99.999% or higher. Cylinder sizes range from small lecture bottles (1L) to large tonnage containers. Pricing fluctuates based on global supply, as xenon is a byproduct of liquid oxygen production. Long-term contracts are advisable for bulk buyers. Key procurement considerations include delivery logistics (high-pressure transport), cylinder ownership models, and adherence to regional gas safety regulations like OSHA or EU directives.

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