Khí công nghiệp


Hydrogen (H2) is an odourless, colourless and tasteless gas that is produced through natural gas steam reforming or the electrolysis of water. Lighter than air, it burns with an invisible, clean (carbon-free and soot-free) flame.

Combined with oxygen, the hydrogen flame reaches a temperature of 2834°C. It is often mixed with argon to create a range of argon/hydrogen shielding gases for TIG and plasma welding.
Hydrogen can also be used with argon in a range of gas mixtures for plasma-cutting (stainless steel and aluminium mainly). Hydro also be used in metalurgy and electronics.

We provide Hydrogen in 50L cynlinders or in long-tube, depends on customers’ application needs.


What is Hydrogen gas?

Hydrogen is a chemical element with symbol H and atomic number 1. With a standard atomic mass of 1.008, hydrogen is the lightest element on the periodic table. Hydrogen is the most abundant chemical in the universe, making up about 75% of the total baryonic mass. Stars are mainly composed of hydrogen in the plasma state. The most common isotope of hydrogen, called protium (rarely used name, symbol 1 H), has one proton and no neutron.

Hydrogen gas properties

  • Hydrogen element symbol: H
  • Formula of single substance (molecular): H2
  • Oxygen’s Atomic Mass: 1
  • Molecular Mass of Oxygen: 2At room temperature, hydrogen is a non-reactive substance, unless it has been somehow activated; for example, with a suitable catalyst. At high temperature, it reacts strongly.
  • Atomic hydrogen reacts with organic compounds to form a complex product mixture; For example with ethylene, C 2 H 4 , the products are ethane, C 2 H 6 , and butane, C 4 H 10 . The heat released when hydrogen atoms recombine to form hydrogen molecules is used to obtain high temperatures in atomic hydrogen welding.
  • Under normal conditions, hydrogen exists in the form of a H2 molecule consisting of two hydrogen atoms. H2 gas is 14.5 times lighter than air (229), colorless, odorless, slightly soluble in water, flammable to form water vapour, has a boiling point of -252.87 °C and a melting point of -259, 14 °C…
  • Hydrogen gas is light, so Earth’s gravitational field is not strong enough to keep them close to the ground, so hydrogen gas exists mainly in the upper layers of Earth’s atmosphere. The remaining hydrogen mainly exists in the form of compounds.

Applications of industrial hydrogen gas in industries

Petrochemical industry

Large quantities of H2 are used in the “upgrade” of fossil fuels. The main mixtures of H2 include hydrodealkylation, hydrodesulfurization, and hydrocracked. Many reactions can be classified as hydrolysis, that is, the cleavage of carbon. Illustrated is the process of separating sulfur from liquid fossil fuels:

R-S-R + 2 H2 → H2S + 2 RH

Hydrogenation process

Hydrogenation, H2 addition to different substrates is conducted on a large scale. The hydrogenation of N2 to produce ammonia using the Haber-Bosch process consumes a few percent of the energy budgets across the global industry. The resulting ammonia is used to provide most of the protein consumed by humans. Hydrogenation is used to convert unsaturated fats and oils into saturated fats and oils. The main application is the production of margarine. Methanol is produced by hydrogenation of carbon dioxide. Similarly, it is the source of hydrogen in the production of hydrochloric acid. H2 is also used as a reducing agent to convert some ores into metals.


Hydrogen is commonly used in power plants as a coolant in generators due to a number of favorable properties that are a direct result of its light diatomic molecules. These include low density, low viscosity and specific heat and the highest thermal conductivity of all gases.

Energy carrier

Hydrogen is not an energy source as a combustion fuel because there is no natural source of hydrogen in useful quantities. The Sun’s energy comes from nuclear fusion with hydrogen, but the process is hard to achieve and can’t be controlled on Earth. Elemental hydrogen from solar, biological or electrical sources takes more energy to generate than the energy obtained by burning it, so in these cases hydrogen acts as a carrier. energy, like a battery. Hydrogen can be obtained from fossil sources (such as methane), but these sources are not sustainable.

The energy densities per unit mass of both liquid hydrogen and compressed gaseous hydrogen at any actual pressure are significantly less than those of traditional fuel sources, although the energy densities per higher mass fuel units. However, elemental hydrogen has been widely discussed in the energy context, as a possible future energy carrier on an economy-wide scale.

For example, CO2 sequestration followed by carbon capture and storage can be done at the H2 point of fossil fuel production. Hydrogen used in transportation will burn relatively cleanly, with some NOx emissions, but no carbon emissions. However, the infrastructure costs associated with a full transition to a hydrogen economy will be substantial. Fuel cells can convert hydrogen and oxygen directly into electricity more efficiently than an internal combustion engine.

Semiconductor industry

Hydrogen is used to saturate the broken (“dangled”) bonds of amorphous silicon and amorphous carbon which stabilizes the material’s properties. It is also a potential electron donor in various oxide materials, including ZnO, SnO 2 , CdO , MgO , ZrO 2 , HfO 2 , La 2 O 3 , Y 2 O 3 , TiO 2 , SrTiO 3 , LaAlO 3 , SiO 2 , Al 2 O 3 , ZrSiO 4 , HfSiO 4 and SrZrO 3 .

Proper use and development

In addition to its use as a reactant, H2 has a range of smaller applications. It is used as a shielding gas in welding methods such as atomic hydrogen welding. Liquid H 2 is used in cryogenic research , including superconductivity research . Since H2 is lighter than air, having a density slightly more than 1 ⁄ 14 of air, it was once widely used as a lifting gas in balloons and airships.

Pure or mixed with nitrogen (sometimes called a forming gas), hydrogen is a tracer gas for detecting small leaks. Applications can be found in the automotive, chemical, power generation, aerospace and telecommunications industries. Hydrogen is a permitted food additive (E 949) that enables leak testing of food packages among other antioxidant properties.

Each of the rarer isotopes of hydrogen also has specific uses. Deuterium (hydrogen-2) is used in nuclear fission applications as a moderator for slowing neutrons and in nuclear fusion reactions. Deuterium compounds have applications in chemistry and biology in studies of reactive isotope effects. Tritium (hydrogen-3), produced in nuclear reactors, is used in the manufacture of hydrogen bombs, as an isotope label in the biological sciences, and as a source of radiation in luminous paints.

Price of industrial hydrogen gas

SIG Vietnam supplies industrial hydrogen in gas and liquid form. Hydrogen gas is delivered in 40L, 50L gas bottles and pallets or loaded into customer bottles at the filling station in the factory. Liquid hydrogen gas is distributed by LGC, ISO tank or pumped directly at the factory. So if you want to know the price, please contact SIG Vietnam to be provided with industrial oxygen price according to your needs.

The place of supplying – producing – distributing industrial gas

Sing Industrial Gas Vietnam Co., Ltd. is a professional manufacturer and distributor of industrial hydrogen gas. In addition, we also supply other industrial gases such as: Liquid nitrogen, liquid argon, liquid oxygen, liquid CO2 and acetylene gas.

Oxygen, Nitrogen, Argon, Carbon Dioxide (CO2) filling service. Dissolved Acetylene (D.A), mixing gas and Ethylene gas, gas filling service for gas cylinders and cylinder assemblies. In addition, SIG Vietnam also supplies refrigerant gases such as: R22, R134a, R401A, R404A, R407C and R410 in bottle form. Single use or reusable bottle. With many weights from 13.6kg to 100kg.

In addition, SIG Vietnam also provides other services such as: tank and ISO tank rental service, design and construction service. Installation and management (EPCM) for gas pipeline system. Pipeline cleaning services as well as gas transportation.

Our customers are steel mills, shipbuilding and repair plants. Hospitals and many companies in other fields such as semiconductor equipment, electronics. Food and beverage processing, refrigeration equipment and paper production.