SEARCH Articles Figures Tables 3-Hydroxybenzoate Butyl 4-hydroxybenzoate sodium salt Eluents sodium /)-hydroxybenzoate Ethyl 4-hydroxybenzoate sodium salt Hydroxybenzoates Methyl hydroxybenzoate sodium salt Propyl 4-hydroxybenzoate sodium salt Sodium ethyl hydroxybenzoate Sodium methyl hydroxybenzoate Sodium propyl hydroxybenzoate