UN1046 High Purity Helium Gas Cas 7440-59-7 , Non Flammable Compressed Gas

Basic Information
Place of Origin: China
Brand Name: Newradar Gas
Certification: ISO/DOT/GB
Model Number: N/A
Minimum Order Quantity: 50pcs
Price: negotiation
Packaging Details: Packed in10L-50L cylinder or packed according to the demands.
Delivery Time: 30-35 working days after received your payment
Payment Terms: L/C, , T/T, Western Union, MoneyGram
Supply Ability: 1000 pcs per month
Detail Information
Purity: 99.9999% Product Name: Helium Gas
MF: He CAS No.: 7440-59-7
EINECS No.: 275-187-7 Odor: Odorless
Application: Minor Commercial Critical Pressure: 0.228Mpa
Filling Pressure: 200Bar Gas Content: 9.2m3
High Light:

purity plus specialty gases


purity cylinder gas

Product Description

UN1046 High Purity Helium Gas Cas 7440-59-7 , Non Flammable Compressed Gas





Helium is a chemical element with symbol He and atomic number 2.

There are nine known isotopes of helium, but only helium-3 and helium-4 are stable. In the Earth's atmosphere, one atom is 3He for every million that are 4He. Unlike most elements, helium's isotopic abundance varies greatly by origin, due to the different formation processes. The most common isotope, helium-4, is produced on Earth by alpha decay of heavier radioactive elements; the alpha particles that emerge are fully ionized helium-4 nuclei. Helium-4 is an unusually stable nucleus because its nucleons are arranged into complete shells. It was also formed in enormous quantities during Big Bang nucleosynthesis.


Helium-3 is present on Earth only in trace amounts; most of it since Earth's formation, though some falls to Earth trapped in cosmic dust. Trace amounts are also produced by the beta decay of tritium. Rocks from the Earth's crust have isotope ratios varying by as much as a factor of ten, and these ratios can be used to investigate the origin of rocks and the composition of the Earth's mantle.


3He is much more abundant in stars as a product of nuclear fusion. Thus in the interstellar medium, the proportion of 3He to 4He is about 100 times higher than on Earth. Extraplanetary material, such as lunar and asteroid regolith, have trace amounts of helium-3 from being bombarded by solar winds. The Moon's surface contains helium-3 at concentrations on the order of 10 ppb, much higher than the approximately 5 ppt found in the Earth's atmosphere. A number of people, starting with Gerald Kulcinski in 1986, have proposed to explore the moon, mine lunar regolith, and use the helium-3 for fusion.

Liquid helium-4 can be cooled to about 1 kelvin using evaporative cooling in a 1-K pot. Similar cooling of helium-3, which has a lower boiling point, can achieve about 0.2 kelvin in a helium-3 refrigerator. Equal mixtures of liquid 3He and 4He below 0.8 K separate into two immiscible phases due to their dissimilarity (they follow different quantum statistics: helium-4 atoms are bosons while helium-3 atoms are fermions).[13] Dilution refrigerators use this immiscibility to achieve temperatures of a few millikelvins.


It is possible to produce exotic helium isotopes, which rapidly decay into other substances. The shortest-lived heavy helium isotope is helium-5 with a half-life of 7.6×10−22 s. Helium-6 decays by emitting a beta particle and has a half-life of 0.8 second. Helium-7 also emits a beta particle as well as a gamma ray. Helium-7 and helium-8 are created in certain nuclear reactions. Helium-6 and helium-8 are known to exhibit a nuclear halo.





1. Physical properties


Commodity High purity helium gas
Molecular Formula He
UN No. UN1046
CAS No. 7440-59-7
Hazardous class for transort 2.2



2. Typical technical data (COA)



Helium % ≥




Impurity Contents

Ne ppm ≤ 4 2 1
  H2 ppm ≤ 1


  O2 ppm ≤ 1 1 0.5
  N2 ppm ≤ 2 1 1
  CO ppm ≤ 0.5 0.2 0.1
  CO2 ppm ≤ 0.5 0.2 0.2
  CH4 ppm ≤ 0.5 0.2 0.1
  H2O ppm ≤ 3 2 1



3. Package


Cylinder Size

Cylinder Content


Gauge Pressure


Outlet Connection


8ltr 1 100bar According to the valve type
40ltr 5.5 135bar According to the valve type
44ltr 6 150bar CGA580
47ltr 7 165bar CGA580
Other sizes are also available





Controlled Atmospheres protective gas in growing silicon and germanium crystals, in titanium andzirconium production, and in gas chromatography
Gas tungsten arc welding

One industrial application for helium is leak detection. Because helium diffuses through solids three times faster than air, it is used as a tracer gas to detect leaks in high-vacuum equipment and

high-pressure containers


Airships and balloons are inflated with helium for lift.

Another minor use is in rocketry, where helium is used as an ullage medium to displace fuel and oxidizers in storage tanks and to condense hydrogen and oxygen to make rocket fuel

Minor commercial and recreational uses Helium as a breathing gas has no narcotic properties, so helium mixtures such as trimix, heliox and heliair are used for deep diving to reduce the effects of narcosis

Scientific uses


The use of helium reduces the distorting effects of Temperature variations in the space between lenses in some telescopes,due to its extremely low index of refraction.


UN1046 High Purity Helium Gas Cas 7440-59-7 , Non Flammable Compressed Gas 0

Contact Details
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