A gas or vapor which can take up space in the air and reduce the concentration of oxygen available for breathing. Examples include acetylene, methane, and carbon dioxide.
Substance that blocks the transport or use of oxygen by living organisms.
(simple) - A vapor or gas that has little or no toxic effects but can cause loss of consciousness or death by displacing air in the lungs and depriving an organism of oxygen. Examples are carbon dioxide and nitrogen.
A vapor or gas that can cause loss of consciousness and death due to lack of oxygen.
a gas or vapor that can cause unconsciousness or death due to lack of oxygen.
A vapour or gas which can cause unconsciousness or death by suffocation (lack of oxygen)
A vapor or gas that can cause unconsciousness or death by suffocation (lack of oxygen). Most simple asphyxiants are harmful to the body when they become so concentrated that they reduce (displace) the available oxygen in air (normally about 21%) to dangerous levels (18% or lower). Chemical asphyxiants, like carbon monoxide (CO), reduce the blood's ability to carry oxygen or, like cyanide, interfere with the body's utilization of oxygen.
A vapor or gas that can cause unconsciousness or death by suffocation (lack of oxygen). Most simple asphyxiants are harmful to the body only when they become so concentrated that they reduce oxygen in the air (normally about 21 percent) to dangerous levels (18 percent or lower). Asphyxiation is one of the principal potential hazards of working in confined and enclosed spaces.
A chemical (gas or vapor) that can cause death or unconsciousness by suffocation. Simple asphyxiants such as nitrogen either use up or displace oxygen in the air. They become especially dangerous in confined or enclosed spaces. Chemical asphyxiants, such as carbon monoxide and hydrogen sulfide, interfere with the body's ability to absorb or transport oxygen over the tissues.
a gas that causes unconsciousness or death through lack of oxygen (suffocation).
