Catalyzes the oxygenolytic cleavage of 2-ethylhexyl sulfate (2-EHS) in the presence of alpha-ketoglutarate to yield 2-ethyl-hexanal and succinate, the decarboxylated form of alpha-ketoglutarate. It can accept a wide range of alpha-keto acids including 2-oxo-valerate, 2-oxo-adipate, 2-oxo-octanoate, 3-methyl-2-oxo-butyrate, oxaloacetate-alpha-ketoadipate, and alpha-ketooctanoate. It can catalyze the cleavage of medium-chain alkyl sulfate esters such as butylsulfate, pentylsulfate, hexylsulfate, heptylsulfate, octylsulfate, nonylsulfate, decylsulfate and sodium dodecyl sulfate (SDS). 2-ethylhexyl sulfate + 2-oxoglutarate + O2 = 2-ethylhexanal + CO2 + H(+) + succinate + sulfate Strongly stimulated by ascorbate. Optimum pH is 7. Homotetramer. Belongs to the TfdA dioxygenase family.