Health and safety
At room temperature, ethane is a flammable gas. When mixed with air at 3.0% – 12.5% by volume, it forms an
explosive mixture.
Some additional precautions are necessary where ethane is stored as a cryogenic liquid. Direct contact with liquid ethane can result in severe
frostbite. In addition, the vapors evaporating from liquid ethane are, until they warm to room temperature, heavier than air and can creep along the ground or gather in low places, and if they encounter an ignition source, can flash back to the body of ethane from which they evaporated.
Containers recently emptied of ethane may contain insufficient
oxygen to support life. Beyond this
asphyxiation hazard, ethane poses no known acute or chronic toxicological risk. It is not known or suspected to be a
carcinogen