A chemical compound, C2H 5Cl, a gas at ordinary temperatures and a colorless, volatile, flammable liquid when compressed, used as a solvent, as a refrigerant, and in the manufacture of tetraethyl lead. 乙基氯，氯乙烷：化合物C2H 5Cl，常温下为一种气体，浓缩后变一种无色的、易挥发的和易燃的液体，用作溶剂、致冷剂，并用于四乙基铅生产合成