Oxygen

Free oxygen makes up about 21% of the air, the rest being mainly nitrogen and less than 1% argon, carbon dioxide and atmospheric dust. It is also found combined with hydrogen in water, accounting for about 89% of its mass.

It is not very soluble in water but is more easily soluble in other substances such as alcohol, acetone and certain molten metals.

Light blue in colour, liquid oxygen boils at around -183°C and solidifies at around -218.4°C, taking the form of hexagonal crystals.

Thanks to its reactive and oxidising properties, oxygen improves the productivity of a wide variety of processes in various sectors, from wastewater treatment to metalworking.

Nippon Gases supplies oxygen in cylinders (gaseous state) or in tanks and mobile containers (liquid state).

Oxygen is used for melting, refining and manufacturing in the metals industry as well as for applications in the glass and chemical industries. This gas is also essential in respiratory treatments for the health sector, in calibration gas mixtures for laboratories, in the Food Industry as it helps to maintain the colour and freshness of certain foods, and to improve waste treatment processes.