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E939 Helium is used in cryogenic research and as a nuclear reactor coolant.
E939 Helium is also used as an analytical reagent in diagnostic/imaging tests to detect respiratory function of the patient.
Medically E939 Helium is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics.
CAS Number: 7440-59-7
EC Number: 231-168-5
Molecular Formula: He
Molecular Weight: 4.0026 g/mol
SYNONYMS:
He, Helium, Atomic helium, Helium-4, p-Helium, O-Helium, helio, [He], helium(0), UNII-206GF3GB41, Helium (USP), Helium [USP], E939, CHEBI:30217, 206GF3GB41, E-939, HSDB 553, UN1046, UN1963, helium atom, Helium, compressed, Helium, compressed [UN1046] [Nonflammable gas], INS NO.939, Helium, >=99.995%, Helium, >=99.999%, CHEMBL1796997, DTXSID7036402, CHEBI:33681, INS-939, DB09155, 71086-78-7, Helium, Messer(R) CANGas, 99.999%, E 939, D04420, Helium, refrigerated liquid (cryogenic liquid), Helium, compressed [UN1046] [Nonflammable gas], Helium, refrigerated liquid (cryogenic liquid) [UN1963] [Nonflammable gas], Helium, He, E939, E-939, INS No.939, INS-939, Atomic Helium, Helium-4, Helio, Helium(0), Helium USP, Helium Atom, Helium Compressed, Helium Refrigerated Liquid, P-helium, O-helium
E939 Helium is the EU food additive code for helium, a colorless and odorless noble gas used in the food industry as a propellant and packaging gas.
E939 Helium is the official EU designation for helium (chemical symbol: He), a naturally occurring, colorless, odorless, and non-flammable noble gas.
In the food industry, E939 Helium is an approved food additive classified under the category of propellant gases and packaging gases.
E939 Helium belongs to the group of noble gases and is chemically inert, meaning it does not react with other substances under normal conditions.
E939 Helium appears as a colorless, odorless, noncombustible gas.
E939 Helium is used in arc welding, to trace leaks in refrigeration and other closed systems and as a lifting gas for lighter-than-air aircraft.
E939 Helium is a colorless odorless gas.
E939 Helium is lighter than air.
E939 Helium is nonflammable and is only slightly soluble in water.
E939 Helium is chemically inert.
When shipped as a liquid it is very cold and will solidify all other gases.
E939 Helium is a colorless, tasteless, and odorless gas that belongs to the group of noble gases.
E939 Helium is a noble gases obtained during the liquefaction of air.
Argon is used to fill light bulbs and as a safety gas for divers.
They are particularly popular as additives in wine cellars: both elements are used as protective gases for grapes, must, wine, and sparkling wine.
They are harmless to food and also approved for use in organic products.
E939 Helium belongs to the class of inorganic compounds known as homogeneous noble gases.
These are inorganic non-metallic compounds in which the largest atom is a halogen atom.
E939 Helium(0) is a monoatomic E939 Helium.
E939 Helium has a role as a NMR chemical shift reference compound and a member of food packaging gas.
E939 Helium is a second most abundant chemical element in the universe with symbol He and atomic number 2.
E939 Helium is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas located at the top of the noble gases on the periodic table.
E939 Helium's boiling and melting points are the lowest among all the elements.
E939 Helium's clinical benefit in inhalation therapy arises from its advantageous physical properties than ambient air.
E939 Helium has lower density than air and generates less resistance than to provide improved lung ventilation.
E939 Helium is a gaseous element with atomic symbol He, atomic number 2, and atomic weight 4.00.
E939 Helium is a noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003.
E939 Helium is a colorless, odorless, tasteless gas that is not combustible and does not support combustion.
E939 Helium was first detected in the sun and is now obtained from natural gas.
E939 Helium is a chemical element with the symbol He and atomic number 2.
E939 Helium is a colorless noble gas that is liquid only below 4.2 Kelvin .
E939 Helium is an inert and propellant gas, and its use is quite wide.
E939 Helium is known as the gas used to inflate balloons.
E939 Helium is a noble gas used in the food industry mainly as a packaging gas and propellant gas.
E939 Helium is a colorless, odorless, tasteless, non-flammable, chemically inert gas with extremely low chemical reactivity.
E939 Helium belongs to the noble gas group in the periodic table and is represented by the chemical symbol He.
E939 Helium is naturally present in trace amounts in the atmosphere and is commercially obtained mainly from natural gas deposits through fractional distillation and purification processes.
E939 Helium is considered a safe food additive when used according to good manufacturing practices.
USES and APPLICATIONS of E939 HELIUM:
As one of the lightest and least reactive gases, E939 Helium offers unique advantages in protecting food from oxidation and spoilage processes.
Because of its properties, E939 Helium is used in very specialized applications in the food industry, especially where precision and delicacy are needed to protect the product.
E939 Helium in the food industry, is a noble gas used as protective packaging to preserve the freshness and quality of food products.
E939 Helium has an exceptionally low chemical reactivity and is completely non-toxic, making it ideal for use in protective food packaging.
Its lightweight nature allows E939 Helium to minimize mechanical damage to delicate food products during transportation and storage.
E939 Helium is rarely used due to its high cost and specialized application, but it can be used in the packaging of high-quality food products such as certain fruits, deli meats and in the production of lightweight food foams, where its lightness can be used to create unique textures.
E939 Helium applications: E939 Helium oxygen mixtures (80:20) in medicine, Gas for professional divers ("Trimix", "Heliox"), Food industry, E939 Helium balloons, Welding, Inert(protecting) gas, Carrier gas for gas chromatography, Leak testing, Lasers (He-Ne laser, He-Cd laser), Pressurized gas instead of air (Formula 1), Cryogenics.
E939 Helium is used as a propellant in food packaged in pressurized containers.
E939 Helium is also used as a filling for balloons.
Liquid E939 Helium is used in cryogenic research and as a nuclear reactor coolant.
E939 Helium is also used as an analytical reagent in diagnostic/imaging tests to detect respiratory function of the patient.
Medically E939 Helium is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics.
E939 Helium inertness is utilized in applications as a carrier gas in gas chromatography , as a shielding gas in arc welding , and as a gas in which silicon and germanium crystals can grow.
The range of applications of E939 Helium also includes its use in gas discharge lamps, where it produces a golden-yellow light.
Due to its small molecule, E939 Helium is used for leak testing, for example of pressure vessels.
The vessel is pressurized with E939 Helium, after which the number of E939 Helium atoms is measured in a nitrogen environment; if none are present, the vessel is leak-tight.
In rocket propulsion, a gas is used to fill the space in the fuel tank that becomes vacant due to fuel consumption.
If E939 Helium is used for this purpose, it comes from a container of liquid E939 Helium under high pressure.
Furthermore, the gas is used in supersonic wind tunnels .
E939 Helium is mainly used as a packaging gas in modified atmosphere packaging systems.
E939 Helium helps protect sensitive foods from oxidation and spoilage by replacing atmospheric oxygen inside packaging.
E939 Helium is sometimes used in packaging delicate foods that may be damaged mechanically during transportation.
E939 Helium may be used in specialty food foams and aerated products because of its low density.
E939 Helium can help maintain product freshness, texture, aroma, and shelf stability.
E939 Helium is approved in the European Union as a food additive gas for specific industrial food-processing applications.
E939 Helium is widely used in cryogenic systems and superconducting magnet cooling.
Liquid E939 Helium is essential in MRI systems, scientific research equipment, and superconductivity studies.
E939 Helium is used as a shielding gas in welding applications because of its inertness.
E939 Helium is used in leak detection systems due to its small atomic size and high diffusivity.
E939 Helium is utilized in aerospace technologies, pressurization systems, and rocket engineering.
E939 Helium is used in semiconductor manufacturing and electronics industries.
E939 Helium is employed in respiratory gas mixtures for certain medical applications.
Because of its inert nature, E939 Helium is widely used in applications where oxidation, contamination, or chemical reactions must be minimized.
In food technology, E939 Helium is mainly used in modified atmosphere packaging systems to help preserve freshness, texture, and product quality.
E939 Helium is also used in pharmaceutical, cryogenic, aerospace, welding, electronics, and scientific applications because of its unique thermal and physical properties.
E939 Helium is a substance used in foods .
E939 Helium is used in canned goods.
-Use of E939 Helium in the Food Industry:
E939 Helium is used in food processing and packaging for several technological purposes:
Propellant gas:
E939 Helium can be used as a propellant in aerosol containers, for example to dispense food products or food ingredients from pressurized containers.
Protective / packaging gas:
E939 Helium is used to flush packaging atmospheres, protecting food from oxidation, moisture ingress, and microbial spoilage, thereby extending shelf life.
Cryogenic cooling processes:
Liquid E939 Helium is used in some specialized industrial freezing and cooling applications in food processing.
-Balloons use of E939 Helium:
E939 Helium is much lighter than air.
It is therefore often used as a filler for hot air balloons and airships .
E939 Helium is preferred over hydrogen , which, although lighter, is highly flammable.
The lifting capacity of E939 Helium is 93% of that of hydrogen.
However, E939 Helium is much more expensive than hydrogen because it is more difficult to extract.
Furthermore, E939 Helium cannot be liquefied using the cascade method , making it expensive to use, for example in transport.
-Coolant uses of E939 Helium:
Because E939 Helium has the lowest melting and boiling points of all elements, it is a highly suitable coolant for many applications requiring extremely low temperatures, such as superconducting magnets , cryogenic research, and nuclear reactors .
In liquid form, E939 Helium is used in MRI scans in the medical sector as a coolant for the superconducting electromagnets.
-Deep-sea diving uses of E939 Helium:
Deep-sea divers often breathe a mixture of E939 Helium and oxygen, partly because oxygen is toxic at higher ambient pressures and nitrogen under high pressure can lead to nitrogen narcosis and decompression sickness .
Replacing part of the nitrogen limits the narcotic effect.
Furthermore, the low density of E939 Helium reduces the viscosity of the breathing mixture, making it easier to breathe at high ambient pressures.
E939 Helium is a good thermal conductor, which results in additional heat loss.
Like nitrogen, E939 Helium can cause decompression sickness.
Partly due to the rising price of E939 Helium, diving with a rebreather is becoming increasingly common .
E939 HELIUM AND ITS FUNCTIONS IN FOOD
In the food industry, E939 Helium has a niche but important role in protecting delicate food products, where its unique properties can be used to preserve structure and quality.
E939 Helium enables food to be produced and packaged in a way that minimizes the risk of spoilage and mechanical damage.
RELATED TERMS of E939 HELIUM:
Food additive with propellant gas role, E939 Helium is used in the food industry for the introduction of dishes in various containers (jars, cans etc.).
E939 Helium is an inert natural gas that has no effect on food.
E939 Helium is used as a packaging gas to displace oxygen in food storage.
E939 Helium, also known as 2HE or helio, belongs to the class of inorganic compounds known as homogeneous noble gases.
These are inorganic non-metallic compounds in which the largest atom is a halogen atom.
E939 Helium is an odorless tasting compound.
Based on a literature review a small amount of articles have been published on E939 Helium.
PRODUCTION of E939 HELIUM:
E939 Helium is part of cosmic matter, found in stars.
E939 Helium can be isolated from the mineral pitchblende.
E939 Helium is also contained in the Earth's crust.
CHEMICAL AND PHYSICAL PROPERTIES of E939 HELIUM:
E939 Helium is the second lightest element in the periodic table (atomic number 2).
E939 Helium exists in nature as a monoatomic gas and belongs to Group 18 (noble gases).
Due to its chemical inertness, E939 Helium does not react with any other substance under normal conditions and leaves no taste, odor, or residue in food products.
E939 Helium is non-flammable and non-toxic.
BENEFITS of E939 HELIUM:
E939 Helium provides excellent chemical stability.
E939 Helium does not oxidize or chemically degrade food products.
E939 Helium helps maintain freshness and product quality.
E939 Helium is non-toxic and non-flammable.
E939 Helium supports long shelf stability in packaged systems.
E939 Helium has extremely low chemical reactivity.
E939 Helium is suitable for sensitive food applications.
E939 Helium is useful for cryogenic cooling technologies.
E939 Helium provides high purity industrial performance.
E939 Helium minimizes contamination risks in packaging systems.
E939 Helium is effective in specialized scientific and industrial processes.
E939 Helium possesses excellent thermal transfer characteristics.
ISOTOPES of E939 HELIUM:
The most common E939 Helium isotope is 4He , which has a nucleus consisting of two protons and two neutrons .
This is an unusually stable nuclear configuration because the nucleus has a full shell with a so-called magic number of nuclear particles.
Much heavier nuclei decay by the emission of a 4He nucleus, a process called alpha decay.
E939 Helium nuclei are therefore also called alpha particles .
A large part of the E939 Helium present on Earth was formed in this way.
A second E939 Helium isotope, 3He , has only one neutron.
There are also heavier isotopes; these are radioactive.
3He is relatively less common on Earth because the decay of heavier elements produces only 4He and atmospheric E939 Helium leaks into space relatively quickly.
The ratio of the two isotopes ( 3He / 4He ) in the Sun (measured in the solar wind ) is about four times higher than in meteorites and 300 times higher than in the Earth's atmosphere .
In geochemistry, the 3 He/ 4 E939 Helium ratio is used to determine the origin of lava and magma .
The idea is that the upper mantle has lost all the gases originally present in it due to convection currents , but that the lower mantle still contains a relatively large amount of the 3 E939 Helium originating from the solar nebula .
Lavas and magmas with a higher 3 He/ 4 He ratio, such as those occurring in hotspot volcanism , are presumed to originate from a relatively unmixed reservoir .
It is suspected that this reservoir is located in the D"-layer or near the core-mantle boundary .
This means that these magmas originate from relatively much greater depths than usual.
According to the Big Bang theory, 3 He and 4 He were both formed in large quantities in Big Bang nucleosynthesis during the Big Bang .
PHYSICAL AND CHEMICAL INFORMATION of E939 HELIUM:
E939 Helium is one of the lightest elements known and is the second lightest element after hydrogen.
E939 Helium exists as a monatomic gas under standard conditions.
E939 Helium has the lowest boiling point of all known elements.
Liquid E939 Helium is widely used in cryogenic applications because it remains liquid at extremely low temperatures.
E939 Helium has very high thermal conductivity compared with many gases.
E939 Helium demonstrates extremely low chemical reactivity because its outer electron shell is completely filled.
E939 Helium does not readily form stable chemical compounds under normal conditions.
E939 Helium is only slightly soluble in water and is practically insoluble in many organic solvents.
E939 Helium diffuses rapidly due to its very small atomic size and low molecular mass.
E939 Helium remains stable under heat and does not decompose under ordinary industrial processing conditions.
CHARACTERISTICS of E939 HELIUM:
E939 Helium is characterized by exceptional chemical inertness and very high physical stability.
E939 Helium does not react with food ingredients, packaging materials, or atmospheric oxygen under normal conditions.
E939 Helium is lighter than air and possesses excellent diffusion properties.
Because of its inert nature, E939 Helium can help reduce oxidative deterioration in sensitive products.
E939 Helium is highly suitable for precision food packaging applications where chemical neutrality is important.
E939 Helium does not contribute flavor, odor, or color to food systems.
Its low density makes E939 Helium useful in specialized aeration and lightweight foam applications.
E939 Helium is considered environmentally stable because it does not participate significantly in ordinary chemical reactions.
WINNING AND PRODUCTION of E939 HELIUM:
E939 Helium is extracted from natural gas , which is often a gas mixture with about 1 volume percent E939 Helium at the time of extraction .
In 2016, a large deposit of E939 Helium was discovered in the soil at Lake Rukwa in Tanzania .
The formation of E939 Helium from hydrogen, a nuclear fusion reaction that releases a great deal of energy, forms the basis of the energy of stars as well as that of the hydrogen bomb .
E939 Helium can be synthesized by bombarding lithium or boron with very fast protons .
This is because α-radiation is released during radioactive decay, which consists of E939 Helium nuclei.
REMARKABLE FEATURES of E939 HELIUM:
E939 Helium is a colorless and odorless noble gas and has an extremely low boiling point (4.2 K ), the lowest of all elements.
E939 Helium is chemically inert under most conditions.
After hydrogen, E939 Helium is the most abundant element in the universe .
E939 Helium consists of individual atoms .
The specific heat of E939 Helium is very high, and E939 Helium vapor is very compact, but expands rapidly at higher temperatures.
The critical temperature of E939 Helium is only 5.19 K.
The phase diagrams of 3 He and 4 He are completely different.
E939 Helium is the only element that does not solidify below a certain temperature at normal pressure.
4 He can only be solidified under high pressure (at least 2.6 MPa ).
Solid 3 He and 4 He have the unique property that their volume can decrease by more than 30% under even greater pressure.
At temperatures below 1 K , 2.6 MPa is sufficient to solidify E939 Helium.
At higher temperatures, this increases rapidly.
For instance, at 15 K, a pressure of around 100 MPa is required, and at room temperature, as much as 20 G Pa .
Solid 4 He exists in three different crystal structures .
At relatively low pressure, 4 E939 Helium adopts a hexagonal close packing .
At a temperature of about 2 K, there is a small region where 4 E939 Helium adopts a body-centered cubic structure.
At extremely high pressure, the third form occurs, a face-centered cubic structure.
Solid 3 E939 Helium adopts a body-centered cubic structure, with a spin ordering transition at about 1 mK.
E939 Helium is a noble gas and, as such, chemically inert under virtually all conditions, but when bombarded with electrons , E939 Helium can form compounds with tungsten , iodine , fluorine, sulfur , and phosphorus .
Of all gases, E939 Helium dissolves the least in water.
E939 Helium-3 is the product of radioactive decay of tritium .
The noble gas also sometimes accumulates in nuclear reactors .
In the modern W88 warheads of the United States, a filter, likely made of palladium , was therefore incorporated to prevent the contamination of the tritium in the "primary", the first stage of the ignition of this hydrogen bomb .
In the United States, contamination with E939 Helium has led to "fizzles".
This means that the neutrons from a nuclear fission are absorbed by E939 Helium during the explosion.
Then there are not enough neutrons available to bombard the reservoir of lithium-6 - deuterium .
The bomb then achieves only a fraction of its intended explosive power.
The American code name for the top-secret filter is "Terrazo"
NATURAL APPEARANCE of E939 HELIUM:
After hydrogen, E939 Helium is the most abundant element in the universe .
Stars and gas giants contain a significant proportion of E939 Helium.
In stars, E939 Helium is formed from hydrogen.
This is the Sun's main energy source.
During a solar storm, a relatively small amount of E939 Helium is blown away.
E939 Helium occurs in the Earth's atmosphere in very small amounts (1 in 200,000 molecules): it is produced on Earth as a byproduct of the radioactive decay of the actinides 238 U and 232 Th .
This is particularly true for minerals containing high levels of uranium and thorium , such as clevite , pitchblende , cartonite , monazite , and beryl ; in these minerals, it is formed from heavy elements by radioactive decay in the form of alpha particles .
The E939 Helium can be extracted from these minerals.
It also occurs in some mineral waters (particularly in Iceland ) and in volcanic gases, and in some natural gas reserves (including in the United States ), from which most commercial E939 Helium is extracted .
E939 Helium has been detected in large quantities via spectroscopy , particularly in stars .
It plays an important role in the proton-proton cycle and the carbon-nitrogen cycle , from which stars derive a large part of their energy production.
SUPERFLUIDITY of E939 HELIUM:
The 4He isotope of E939 Helium exists in the liquid phase in two forms:
4He I and 4He II.
E939 Helium I is an ordinary liquid, but E939 Helium II is a superfluid .
In the case of 4He , this effect is based on the so-called Bose-Einstein condensation , whereby more and more molecules can descend to the same energy level.
A superfluid has a viscosity of 0 and is therefore incomparable to any other substance.
When the temperature drops below the lambda point, E939 Helium I abruptly changes into E939 Helium II.
For 4He , the lambda point is at 2.174 K.
Since the transformation of He I into He II is a continuous phase transition , without latent heat at the lambda point, He I and He II cannot coexist.
E939 Helium was one of the first substances in which a quantum mechanical effect was observed at the macroscopic level.
The 3 He isotope has two superfluid phases, both at temperatures below 2.6 mK—but a few thousandths of a degree above absolute zero.
Unlike 4 He atoms, which are bosons , 3 He molecules have an odd number of protons + neutrons and are therefore fermions , so they behave according to the Fermi-Dirac statistic .
DISCOVERY of E939 HELIUM:
E939 Helium was discovered independently of each other in 1868 by the Frenchman Pierre Janssen and the Englishman Norman Lockyer .
Pierre Janssen studied the light from the Sun 's chromosphere during a solar eclipse that took place on August 18 of that year in Guntur , British India , and observed with a spectroscope at a wavelength of 587.49 nm an emission line of a previously unknown element.
Norman Lockyer discovered the line in the Sun's spectrum on October 20, but both published their discovery on the same day.
Edward Frankland confirmed Janssen's observations and it was he who proposed naming the element after the Sun.
He suggested the suffix -ium because he expected the element to be a metal .
When the element was extracted from clevite by Sir William Ramsay in 1895, E939 Helium turned out not to be a metal, but the name was not changed.
The Swedish chemists Nils Langlet and Per Theodor Cleve conducted the same experiment independently of Ramsay at approximately the same time.
In 1907, Ernest Rutherford and Thomas Royds demonstrated that alpha particles were E939 Helium nuclei.
In 1908, the Dutch physicist Heike Kamerlingh Onnes was the first to succeed in liquefying E939 Helium by cooling the gas to 0.9 Kelvin .
He was awarded the Nobel Prize in Physics for this .
His student Willem Keesom , who had by then succeeded him as director of the laboratory, was the first to convert E939 Helium into a solid form under high pressure in 1926.
PHYSICAL and CHEMICAL PROPERTIES of E939 HELIUM:
Molecular Weight: 4.00260
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 0
Rotatable Bond Count: 0
Exact Mass: 4.002603254
Monoisotopic Mass: 4.002603254
Topological Polar Surface Area: 0 Ų
Heavy Atom Count: 1
Formal Charge: 0
Complexity: 0
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Atomic number: 2
Atomic mass: 4.00260 g.mol -1
Electronegativity according to Pauling: unknown
Density: 0.178*10 -3 g.cm -3 at 20 °C
Melting point: - 272.2 (26 atm) °C
Boiling point: - 268.9 °C
Vanderwaals radius: 0.118 nm
Ionic radius: unknown
Isotopes: 2
Electronic shell: 1s 2
Energy of first ionisation: 2372 kJ.mol -1
Discovered by: Sir Ramsey in 1895
Name: helium
Symbol: He
Atomic number: 2
Relative atomic mass (Ar): 4.002602
Standard state: gas at 298 K
Density: 0.1787 kg.m⁻³
Boiling point: 4.2 K
State of aggregation: Gas
Heat of vaporization: 0.0845 kJ.mol⁻¹
Van der Waals beam: 1:40 pm
Crystal structure: Hex
speed of sound: 970 m.s⁻¹
Specific heat: 5193 kJ.kg⁻¹ .K⁻¹
Thermal conduction: 0.1513 W.m -1 .K -1
Chemical Formula: He
IUPAC name: helium
InChI Identifier: InChI=1S/He
InChI Key: SWQJXJOGLNCZEY-UHFFFAOYSA-N
Isomeric SMILES: [He]
Average Molecular Weight: 4.0026
Monoisotopic Molecular Weight: 4.00260325
Atomic mass: 4,002602 u
Electron configuration: 1s 2
Oxidation states: 0
Atomic radius: 31 pm
1st ionization potential: 2372.34 kJ · mol −1
2nd ionization potential: 5250.56 kJ · mol −1
Chemical Name: Helium
E Number: E939
CAS Number: 7440-59-7
EC Number: 231-168-5
Molecular Formula: He
Molecular Weight: 4.0026 g/mol
Atomic Number: 2
IUPAC Name: Helium
Appearance: Colorless gas
Odor: Odorless
Taste: Tasteless
Classification: Noble gas
Colorless gas
Odorless
Tasteless
Non-flammable
Chemically inert
Monatomic gas structure
Very low density
Very low boiling point
Very low melting point
Low viscosity
Very low water solubility
Non-toxic under normal conditions
Non-corrosive
Extremely low chemical reactivity
Excellent thermal conductivity
High diffusivity
Low molecular weight
Stable under standard conditions
Non-explosive
Non-oxidizing
Does not support combustion
Excellent cryogenic properties
High compressibility
Low refractive index
Very low surface tension in liquid form
High ionization energy
Non-polar atomic structure
Very low condensation temperature
Stable in modified atmosphere systems
Compatible with food-contact applications
Appearance: colourless
Classification: Non-metallic
Group in periodic table: 18
Group name: Noble gas
Period in periodic table: 1
Block in periodic table: p
Shell structure: 2
Appearance Form: Compressed gas
Odour: No data available
Odour Threshold: No data available
pH: No data available
Melting point/freezing point:
Melting point/range: -272,19 °C at 26 hPa
Initial boiling point and boiling range: -268,89 °C at 1.013 hPa
Flash point: Not applicable
Evaporation rate: No data available
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits: No data available
Vapour pressure: No data available
Vapour density: 0,14 - (Air = 1.0)
Relative density: No data available
Water solubility: 0,0015 g/l
Partition coefficient: n-octanol/water: No data available
Auto-ignition temperature: No data available
Decomposition temperature: No data available
Viscosity: No data available
Explosive properties: No data available
Oxidizing properties: No data available
Other safety information:
Relative vapour density: 0,14 - (Air = 1.0)
FIRST AID MEASURES of E939 HELIUM:
-Description of first aid measures:
*General advice:
Consult a physician.
Show this safety data sheet to the doctor in attendance.
*If inhaled:
If breathed in, move person into fresh air.
Consult a physician.
*In case of skin contact:
Wash off with soap and plenty of water.
Consult a physician.
*In case of eye contact:
Flush eyes with water as a precaution.
*If swallowed:
Rinse mouth with water.
Consult a physician.
-Indication of any immediate medical attention and special treatment needed:
No data available
ACCIDENTAL RELEASE MEASURES of E939 HELIUM:
-Personal precautions, protective equipment and emergency procedures:
Ensure adequate ventilation.
Evacuate personnel to safe areas.
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Clean up promptly by sweeping or vacuum.
FIRE FIGHTING MEASURES of E939 HELIUM:
-Extinguishing media:
*Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
-Further information:
Use water spray to cool unopened containers.
EXPOSURE CONTROLS/PERSONAL PROTECTION of E939 HELIUM:
-Control parameters:
--Components with workplace control parameters:
-Exposure controls:
--Appropriate engineering controls:
Handle in accordance with good industrial hygiene and safety practice.
Wash hands before breaks and at the end of workday.
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
*Skin protection:
Handle with gloves.
Wash and dry hands.
-Control of environmental exposure:
Do not let product enter drains.
HANDLING and STORAGE of E939 HELIUM:
-Conditions for safe storage, including any incompatibilities:
Store in cool place.
Keep container tightly closed in a dry and well-ventilated place.
Contents under pressure.
STABILITY and REACTIVITY of E939 HELIUM:
-Reactivity:
No data available
-Chemical stability:
Stable under recommended storage conditions.
-Possibility of hazardous reactions:
No data available
-Conditions to avoid:
No data available
-Hazardous decomposition products:
Other decomposition products - No data available
