Ethyl nitrate is a chemical compound with the formula C2H5NO3. It is a colorless liquid that is primarily used as a nitrate ester. Ethyl nitrate is known for its use in the production of explosives and as a fuel additive, enhancing the performance of certain fuels. In addition to its industrial applications, ethyl nitrate can also be found in some medical contexts, where it may be used as a vasodilator. This means it can help widen blood vessels, improving blood flow. However, it is important to handle ethyl nitrate with care due to its potential hazards.