Answer: ethenes

AnswerCrossword Clue
ETHENESPetroleum gases
ETHENESRefinery gases
ETHENESFlammable gases
ETHENESColorless gases
ethenesETHENE, a flammable gas, also ETHYLENE
ethenescolorless, flammable gas, C2H4, having a sweet, unpleasant odor and taste, the first member of the ethylene series, usually obtained from petroleum and natural gas: used as an agent to improve the color of citrus fruits, in the synth
ethenescontaining the ethylene group
ethenesethylene