"SN/T 4461-2016 Determination of oxidation of toxic and corrosion gases and their mixtures" defines an experimental and computational method for determining whether the oxidation of gases (or gas mixtures) is stronger than that of air. This standard applies to the evaluation of toxic and corrosion gases and their mixtures. The principle of determination is to form a mixture of gases or mixed gases with nitrogen, and then introduce the reference material ethane to observe whether combustion occurs to evaluate its oxidation. If the mixture is capable of combustion in the presence of the reference material ethane, it indicates that the gas has stronger oxidation than air; if combustion is not possible, no combustion is seen even when the ethane concentration reaches MAX Maximum, indicating that the oxidation of the gas is weaker than air.