Ethyl iodoacetate is an organic compound with the chemical formula ICH2CO2CH2CH3. It is a derivative of ethyl acetate.[2][3] Under normal conditions, the compound is a clear, light yellow to orange liquid.
Used by the British during World War I, it was codenamed SK gas, for the initials of South Kensington, where it was developed.[4]
Like many alkyl iodides, ethyl iodoacetate is an alkylating agent, which makes it useful in organic synthesis, yet toxic. Ethyl iodoacetate is also a lachrymatory agent.