OXYGEN

Air consists of 78% nitrogen and 21% oxygen, which liquefies at -183°C and solidifies at -218.9°C.

At atmospheric pressure, liquid oxygen only takes up 1/854 of its gaseous volume. This allows large quantities of oxygen to be transported and stored in cryogenic (liquid) form.

The most important property of oxygen is its reactivity. There are only few elements with which oxygen will not react. Oxidation and combustion processes with oxygen-enriched atmospheres take place much faster than in air atmosphere. This property makes oxygen indispensable for a large number of industrial applications.

Because oxygen is highly soluble in water, it is suitable for water conditioning and other environmental technologies. Oxygen is also required for the metabolism of many organisms, that’s why it is usable in the human medicine.

CRYOINVEST jsc ensure oxygen for 18 of the biggest hospitals in different regions of Bulgaria and also for some companies using oxygen for cutting and welding of metals.

ARGON

Argon is a colorless and odorless rare gas which is heavier than air. The most important chemical property of argon is its inertness, which makes it an ideal protective gas even at the temperatures commonly occurring in metallurgy and during arc welding.

Argon is non-toxic but, just like nitrogen, is able to displace oxygen required for breathing. Moreover, because argon is heavier than air, it can accumulate close to ground level, particularly in depressions.

CARBON DIOXIDE (СО₂)

Carbon dioxide (CO₂) is a colorless, non-combustible, odorless and tasteless gas. Together with water, it forms carbonic acid (H₂CO₃).

Special properties of carbon dioxide, such as its inertness and high water solubility, make CO₂ an ideal aid in numerous aspects of daily life and environmental technology. CO₂ is used to carbonate many beverages, for conditioning drinking water and neutralizing waste water. As a cryogenic liquid or in solid form (dry ice), CO₂ is used as a refrigerant at temperatures as low as -79 °C.

NITROGEN

Nitrogen makes up roughly 78% of the volume of the air we breathe. At standard temperature, nitrogen is a colorless, odorless and tasteless gas. It is non-toxic and chemically inert - i.e. exhibits a very low reactivity - at low temperatures. Nitrogen is non-flammable and capable of suppressing combustion processes. Furthermore, it has an asphyxiating effect, as it displaces the oxygen required for breathing.

Under atmospheric pressure, nitrogen liquefies at -196 °C.

Nitrogen has numerous applications in the industrial and research sectors. In most of these applications, it is used either physically - as a refrigerant, or chemically - as an inert gas.

Nitrogen find application also in agriculture for durable preservation of grain corps and other agricultural production, for elimination of pests without treating with chemicals and for protection from parasitic fungi.

 NITROUS OXIDE (N₂O)

The analgesic and anaesthetic effects of nitrous oxide are well known for more than 150 years. It is used in hospitals all over the world for inhalational anaesthesia in combination with other drugs such as volatile compounds, anaesthetics, muscle relaxants, analgesic compounds and others. Nitrous oxide is also used in a mixture with oxygen for analgesia in painful interventions in hospitals.