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Hydrotrope

    A '''hydrotrope''' is a compound that solubilises hydrophobic compounds in aqueous solutions Typically '''hydrotropes''' consist of a hydrophilic part and a hydrophobic part (like surfactants) but the hydrophobic part is generally too small to cause spontaneous self-aggregation
    '''Hydrotropes''' do not have a critical concentration above which self-aggregation 'suddenly' starts to occur (as found for micelle- and vesicle-forming surfactants which have a cmc and a cvc respectively) Instead some hydrotropes aggregate in a step-wise self-aggregation process gradually increasing aggregation size However many '''hydrotropes''' do not seem to self-aggregate at all unless a solubilisate has been added
    Hydrotropes are in use industrially
    Examples of hydrotropes: p-toluenesulfonate