Alpha-ketoglutarate-dependent sulfate ester dioxygenase, which oxidizes medium-chain alkyl-sulfate esters. Thus, catalyzes the oxygenolytic cleavage of 2-ethylhexyl sulfate (2-EHS), leading to the formation of succinate and 2-ethylhexanal. Has likely a role in sulfate scavenging in vivo. 2-ethylhexyl sulfate + 2-oxoglutarate + O2 = 2-ethylhexanal + CO2 + H(+) + succinate + sulfate Belongs to the TfdA dioxygenase family.