Product Overview
Pure Helium Gas is the gaseous form of the monatomic inert noble gas helium (He), primarily extracted from natural gas reserves through cryogenic distillation. It is the second lightest element and possesses a unique combination of properties, including the lowest boiling point of all elements, high thermal conductivity, and complete inertness. The unparalleled characteristics of high-purity helium make it an indispensable and critical resource in a wide range of high-tech, medical, and scientific applications. The supply of high-quality, high-purity helium is crucial to the performance and reliability of advanced systems ranging from MRI machines to space launch vehicles.
Basic Information
| CAS Number | 7440-59-7 |
| UN Number | UN 1046 (Compressed Helium) |
Key Attributes & Parameters
| Purity | Standard grades range from 99.995% (4.5) to 99.9999% (6.0) and higher. Critical impurities (Ne, H₂, H₂O, O₂, N₂, THC) are precisely controlled. |
| Boiling Point | -268.9 °C (-452.0 °F), the lowest of all elements. |
| Density | 0.1785 g/L (at 0°C and 1 atmosphere), very low. |
| Appearance | Colorless, odorless, non-toxic gas. |
| Key Characteristics | Non-flammable, non-reactive, high thermal conductivity, low solubility, and high speed of sound. |
Features and Benefits
Extreme Inertness and Safety
Completely non-reactive and non-flammable, making it the safest choice for leak detection, purging, and applications involving sensitive or reactive materials.
Unparalleled Cooling Capability
Pure Helium Gas (LHe) provides ultra-low temperatures (<4.2K), the temperature required for superconductivity, enabling the operation of MRI magnets, particle accelerators, and quantum computing systems.
Lightweight and Non-Condensing
Its low density and resistance to liquefaction under normal conditions make it an ideal lifting gas for specialized balloons and airships, and an excellent carrier gas in analytical instruments.
High Permeability
Its small atomic size allows for the detection of even the smallest leaks with high sensitivity, a cornerstone of quality assurance in critical manufacturing sectors.
Functional Characteristics
Pure helium is a versatile process aid. Its main functions include: creating and maintaining an inert protective atmosphere; acting as a cryogenic fluid to achieve temperatures close to absolute zero; serving as a lightweight, non-condensable lifting medium; and acting as a highly sensitive tracer gas. Gaseous helium is stored in high-pressure cylinders, tube trailers, or transported as cryogenic liquid (LHe) in specialized containers. Its performance depends on its consistent purity, dryness, and reliable supply.
Main Application Areas
Healthcare
A critical coolant for superconducting magnets in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) spectrometers.
Electronics and Manufacturing
An inert shielding gas for welding (especially reactive metals such as titanium), a purge gas for semiconductor and fiber optic production, and for leak detection in all major industries (automotive, aerospace, HVAC).
Aerospace and Defense
A pressurizing agent for liquid-fueled rockets, a purge gas for cryogenic systems, and a lifting gas for scientific balloons and reconnaissance airships.
Analysis and Research
A carrier gas in gas chromatography (GC), for atmosphere control in advanced research (e.g., fiber optics, crystal growth), and as a coolant for large-scale physics experiments (e.g., particle colliders, fusion research).
Customer Collaboration Case
A global manufacturer of semiconductor fabrication equipment selected us as their sole-source supplier of ultra-high-purity (UHP 6.0) pure helium. Their advanced etching and deposition tools required a purge and carrier gas with near-zero levels of moisture, oxygen, and hydrocarbons to prevent wafer contamination and ensure nanometer-scale precision. We implemented a dedicated, just-in-time supply chain using on-site tube trailers, coupled with real-time purity monitoring at the point of use. Our consistent supply of pure helium, backed by 24/7 technical support, enabled the customer to achieve a sustained reduction in process defects, improve chip yield, and maintain stringent production uptime for their Fortune 500 clients. This partnership highlights how a reliable pure helium supply is integral to the backbone of high-tech manufacturing.
As a professional service provider in the field of hazardous chemicals, Heze Dongjian Chemical Sales Co., Ltd. focuses on the sales and supporting services of key chemical products such as ethylene trading, ethylene transportation, refrigerants, and bottled special gases. The company specializes in deeply cultivating and developing the specialized field of hazardous chemicals, and has established a full-chain service system from source procurement to terminal delivery for core products like liquid ethylene. It has over 160 dedicated hazardous chemical transportation fleets and over 180 delivery vehicles, ensuring the safe and efficient delivery of products. Relying on rich industry resources, the company can provide precise product quotations and professional technical support. Its business covers multiple core chemical regions across the country. Whether it is bulk ethylene trading or customized refrigerant supply, Dongjian Chemical can meet customers' diverse needs with its mature operation model and become a reliable partner for core chemical product supply in the industry.
Hot Tags: pure helium gas, China pure helium gas manufacturers, suppliers, factory, Chloroethane CAS 75 00 3, Co2 Calibration Gas, Hydrogen Fluoride CAS 7664 39 3, Pure Helium Gas, Sulfur Hexafluoride CAS 2551 62 4, Vinyl Chloride CAS 75 01 4
