High‑purity helium
Product Details
1. Product Name
Pure Helium, Industrial Helium, High-Purity Helium, Ultra-Pure Helium
2. Chemical formula for hydrogen: He
It has a low critical temperature, is a gas that is difficult to liquefy, is chemically inert, does not burn, and does not support combustion.
3. Purity
99.995%, 99.999%, 99.9999%
4. Technical Requirements for Industrial Helium, High-Purity Helium, and Ultra-High-Purity Helium – Pure Helium
| Project Name |
Indicator |
||
| Ultra-pure helium |
High‑purity helium |
Pure helium |
|
| Helium Purity (Volume Fraction) / 10 -2 ≥ |
99.9999 |
99.999 |
99.995 |
| Neon content (volume fraction) / 10 -6 ≤ |
1 |
4 |
15 |
| Hydrogen content (volume fraction) / 10 -6 ≤ |
0.1 |
1 |
3 |
| Oxygen (argon) content (volume fraction) / 10 -6 ≤ |
0.1 |
1 |
3 |
| Nitrogen content (volume fraction) / 10 -6 ≤ |
0.1 |
2 |
110 |
| Carbon monoxide content (volume fraction) / 10 -6 ≤ |
0.1 |
0.5 |
3 |
| Carbon dioxide content (volume fraction) / 10 -6 ≤ |
0.1 |
0.5 |
1 |
| Methane content (volume fraction) / 10 -6 ≤ |
0.1 |
0.5 |
1 |
| Moisture content (volume fraction) / 10 -6 ≤ |
0.2 |
10 |
10 |
V. Packaging Specifications
8L 10L 40L 50L Container Tube Bundle Vehicle Helium
VI. Applications of Helium Gas
Helium is primarily used in the following industries: military and aerospace, refrigeration, petrochemicals, healthcare, balloon inflation, semiconductors, metal manufacturing, deep-sea diving, high‑precision welding, and fiber optics.
1. Aerospace: Helium is extensively used throughout the entire aerospace and aircraft manufacturing process, from production to flight. In space missions, helium is employed to purify hydrogen systems, while on the ground and in flight, it serves as a pressurizing agent for fluid systems. In addition, helium is utilized as a lifting gas for meteorological balloons and other observation balloons.
2. Diving: During diving, the combined use of oxygen and helium can effectively eliminate nitrogen narcosis, reduce respiratory resistance at depth, and shorten decompression stops. Heliox allows divers to stay underwater for longer periods at greater depths. The deeper the dive and the higher the helium concentration, the deeper the diver can descend and the longer they can maintain welding operations.
3. Healthcare: As an ideal cryogenic gas for superconducting magnets used in MRI and NMR, helium can achieve ultra‑low temperatures as low as -451°F, enabling the acquisition of high‑resolution images of internal organs and tissues.
4. Inflating Balloons: Because helium has a density that is far lower than air—air has a density of 1.29 kg/m³, while helium’s density is 0.1786 kg/m³—and because helium is chemically highly inert and much safer than hydrogen (hydrogen can ignite in air and may even cause explosions), helium is commonly used as the inflation gas in airships or advertising balloons.
5. Welding and Metalworking: Helium’s inert nature under arc‑temperature conditions makes it an ideal shielding gas for welding high‑thermal‑conductivity materials such as aluminum, stainless steel, copper, and magnesium alloys. It can also be used as a quenching gas in heat‑treatment processes and as a furnace gas to enhance the durability and quality of components.
7. Important Notes:
1. When using high‑purity helium, it should be regulated by a pressure reducer such as YQY‑12 or 152IN‑125 before being put into use. Before use, check the gas pipelines for leaks using soapy water to ensure that there are no gas leaks in the pipeline system.
2. Ensure that helium does not leak and that the workplace is well ventilated. When the helium concentration rises and the oxygen level falls below 19.5%, patients first experience rapid breathing, difficulty concentrating, and ataxia; subsequently, they may develop fatigue and weakness, restlessness, nausea, vomiting, coma, convulsions, and ultimately death.
3. When using each helium cylinder until the gas is nearly exhausted, maintain a residual pressure of 0.5 MPa in the cylinder; the residual pressure must not fall below 0.25 MPa. The cylinder valve should be closed to ensure both gas quality and operational safety.
4. Bottled helium must be stored, transported, and used in designated categories. It must never be placed near open flames or heat sources. Avoid exposure to fire, oil, or wax; do not expose it to direct sunlight, drop it from heights, or subject it to impact. Arcing or electric arcs on the cylinder itself are strictly prohibited. Rough handling during loading and unloading is strictly forbidden. For short-distance movement of helium cylinders, use a dedicated cylinder trolley; for long-distance transportation, use a vehicle specially equipped for the transport of hazardous materials.
Liquid helium has a temperature of −268.9°C and can cause severe frostbite upon contact with skin.
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Shandong Shaohua Gas Co., Ltd.
Phone: 40080 40085
Fax: +86 (535) 6013313
E-mail: ma0616@shaohuagas.com
Address: No. 5 Fengshan Road, Zhifu District, Yantai City, Shandong Province