Pentasodium diethylenetriaminepentaacetic

Chelants at concentrations of 0.1 to 0.2% improve the oxidative stabihty through the complexation of the trace metal ions, eg, iron, which catalyze the oxidative processes. Examples of the chelants commonly used are pentasodium diethylenetriaminepentaacetic acid (DTPA), tetrasodium ethylenediaminetetraacetic acid (EDTA), sodium etidronate (EHDP), and citric acid. Magnesium silicate, formed in wet soap through the reaction of magnesium and siHcate ions, is another chelant commonly used in simple soap bars. 

Diethylenetriaminepentaacetic acid, pentasodium salt. See Pentasodium pentetate... 

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