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Physical & Chemical properties

Vapour pressure

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Description of key information

Vapour pressure of lactic acid at room temperature is negligible

Key value for chemical safety assessment

Additional information

Pure, crystalline lactic acid has an estimated vapour pressure of 0.028 mm Hg. The vapour pressure of a 93% aqueous solution of lactic acid will be dominated by the vapour pressure of the water present in the solution, up to the boiling point of the solution.