Argon (Ar) is a gas that is abundantly present in the atmosphere, with a concentration estimated to be 0.94% by volume. This gas is inert, non-toxic, colorless, odorless, and tasteless. Argon is soluble in water, with a solubility 2.5 times greater than that of nitrogen and a solubility similar to that of oxygen. Argon is supplied to customers in both gaseous and liquid forms.
Acetylene (C2H2) is a colorless gas with a garlic-like odor, and it is highly flammable when exposed to heat and oxidizers. Therefore, it should be kept away from fire, heat sources, and oxidizing materials. Acetylene has a high solubility in acetone, which is why it is supplied in a dissolved form in acetone. Acetylene is an unstable gas and cannot be stored at high pressures.
Hydrogen (H) is a highly flammable, colorless, and odorless gas. It has a low solubility in hydrocarbon solutions and is the lightest gas. Although hydrogen is non-toxic, it does not support life and can act as a suffocating gas by displacing oxygen, making breathing difficult.
Carbon Dioxide (CO₂) is a compound that is non-flammable, non-toxic, colorless, and has a slightly sharp odor. In its gaseous form, it is 1.5 times heavier than air.
Nitrogen (N₂) is colorless, odorless, non-toxic, and an inert gas that makes up 79% of the air. It is non-flammable and does not support combustion. Nitrogen is supplied in the form of cylinders under high pressure or in containers with insulation in its liquid phase.
Oxygen (O₂) is a colorless, odorless, and tasteless gas constituting 21% of the Earth's atmosphere, is a life-supporting oxidizing agent that facilitates combustion processes, supplied in cylindrical tanks as a gas and in insulated containers as a liquid.
Nitrogen Oxide (NOx) is non-flammable, non-toxic, colorless, and has a slight odor with a mildly sweet taste. It is soluble in alcohol, ether, sulfuric acid, alkaline solutions, and oils. As an oxidizing agent, it supports combustion.
Helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element (only hydrogen is
lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F). The boiling and freezing points of helium are lower than those of any other known substance. Helium is the only element that cannot be solidified by sufficient cooling at normal atmospheric pressure; it is necessary to apply pressure of 25 atmospheres at a temperature of 1 K (−272 °C, or −458 °F) to convert it to its solid form.
Ethylene (C2H4) is a hydrocarbon which has the formula C2H4 or H2C=CH2. It is a colourless, flammable gas with a faint "sweet and musky" odour when pure. It is the simplest alkene (a hydrocarbon with carbon–carbon double bonds).
Sulfur Dioxide (SO₂) is a colorless gas or liquid with a strong, choking odor. It is produced from the burning of fossil fuels (coal and oil) and the smelting of mineral ores (aluminum, copper, zinc, lead, and iron) that contain sulfur. Sulfur dioxide dissolves easily in water to form sulfuric acid.
Sulfur Hexafluoride (SF6) is an inorganic compound with the formula SF6. It is a colorless, odorless, non-flammable, and non-toxic gas. SF6 has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom.
Deuterium (D2) also known as heavy hydrogen, is an isotope of hydrogen with one proton and one neutron in its nucleus, giving it approximately twice the mass of ordinary hydrogen. It occurs naturally in trace amounts in water and is widely used in nuclear reactors, scientific research, and as a tracer in chemical and biological studies.