Certainly, chlorine is a hazardous material.
It is a greenish/yellow poisonous gas (which smells of bleach) and was used by the Germans to gas soldiers in the WWI.
When chlorine gas comes into contact with moist tissues such as the eyes, throat, and lungs, an acid is produced (hydrochloric acid) that will damage these tissues.
It is used in liquid form (in small amounts) to purify drinking water.
Nitrogen is a hazardous material because if enough of it is released in a confined space it can displace the oxygen and anyone in the space would collapse and perhaps dies from lack of oxygen. That makes it an asphyxiant. It is also hazardous because it is transported in compressed form and can produce an explosion if not handled or packaged properly.
Yes, liquid oxygen is a hazardous material as a cryogenic liquid, an oxidizer, and also as a compressed gas.
Methane and Oxygen
phosgene
This compound is carbon monoxide.
A very spectacularly lightened liquid for of material.
You think probable to carbon monoxide.
This chemical is carbon monoxide (CO).
This substance is the gas carbon monoxide (CO).
Liquid oxygen contains 4,000 times more oxygen by volume than normal air. Materials that are usually considered non-combustible, (such as carbon and stainless steels, cast iron, aluminum, zinc and teflon) may burn in the presence of liquid oxygen. Many organic materials can react explosively, especially if a flammable mixture is produced. Clothing splashed or soaked with liquid oxygen can remain highly flammable for hours.In addition, liquid oxygen is very cold, and the cold alone can be hazardous to people, as well as embrittle materials that are not otherwise brittle so they could break more easily.
Krypton gas is not a highly reactive substance, so it is not hazardous of its own accord. However, it can deplete oxygen in the atmosphere and cause asphyxiation. Krypton is known as an asphyxiant.
because oxygen is combustible.
If you do not want to cool it then it requires 500,000 psi (pounds per square inch). This is not easy to do because oxygen is hazardous to work with.
its a gas