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Argument, Cyril (1944). "The iodous sulphates". Durham theses (Durham University). https://etheses.dur.ac.uk/9113/. "According to the equation: (IO)2SO4 + 2SO3= I2(SO4)3 ... the yellow crystals could be isolated. They showed properties typical of a neutral iodine salt, being specially sensitive to moisture. [Fichter et al.] showed that the compound was mainly neutral iodine sulphate I2(SO4)3 ... the neutral salts have a much lighter yellow colour[,] a greater solubility in organic liquids and a greater sensitivity to water.".