Product Introduction:
English Name: Helium
Chemical Formula: He
CAS Number: 7740-59-7
Appearance: Colorless and odorless inert gas
Molar Mass: 4.0026g/mol
Melting Point: -272.1
Density: 0.15 (-271℃)
Boiling Point: -268.9
Hazard Statement: If exposed to high heat, the pressure inside the container will increase, and there is a risk of cracking and explosion.
Use:
High-purity helium is a colorless, tasteless, odorless inert gas at room temperature. It has the lowest critical temperature and is the most difficult gas to liquefy found in nature. High-purity helium is extremely inactive in chemical properties and cannot burn or support combustion. The helium content in the air is about 5.2 parts per million. In theory, it can be separated and extracted from the air, but because its content is too thin, the separation cost is very high. Industrial helium is mainly imported from abroad. Due to its inactive chemical properties and lighter than air, high-purity helium is often used as the filling gas in spacecraft or advertising balloons, and this use is also well known. High-purity helium is widely used in mixed breathing gases in the field of marine development and in the cooling of superconducting electromagnets of nuclear magnetic resonance imaging equipment in the medical field: military industry, scientific research, petrochemicals, refrigeration, medical treatment, semiconductors, pipeline leak detection, superconducting experiments, metal manufacturing, deep-sea diving, high-precision welding, optoelectronic product production, etc.
Technical Parameters:
| Gas name | Chemical formula | Purity (%) | Impurities (ppm) |
| Helium | He | 99.999% | O2≤1.H2O≤2.H2≤1.Total hydrocarbons ≤ 3 |
| 99.9999% | H2O≤0.2.O2≤0.2.H2≤0.1.CO2≤0.1.CO≤0.1.CH4≤0.2.N2≤0.5 |
| Technical parameters | ||||||
| No. | Name | Chemical formula | Purity (%) | Pressure (Mpa) | Filling volume (m3/Kg) | Valve interface |
| 1 | High purity helium | He | 99.999 | 13.5 | 5.5 | G5/8 |
| 2 | High purity helium | He | 99.999 | 9.5 | 0.8 | G5/8 |
| 3 | Liquid helium | He | 99.999 | / | / | / |
