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Physical & Chemical properties

Dissociation constant

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Description of key information

Read across from Glutamic acid (EC 200-293-7):

Three functional groups for which dissociation constants are available. The dissociation constants are obtained from handbooks.

Key value for chemical safety assessment

Additional information

L-Glutamic acid, an analogue substance, is deprotonated at pH>4 (COOH: pK1 2.19, pK2 4.25; NH3+: pK3 9.67 at 20 °C, obtained from the Merck Index 12th Edition) so at environmental and physiological pH it is present in the form of L-Glutamate.