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Physical & Chemical properties

Vapour pressure

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Description of key information

By read-across from the enantiomers DD-lactide and LL-lactide, the vapour pressure of dilactide is estimated to be 0.311 Pa in a worst-case approach.

Key value for chemical safety assessment

Vapour pressure:
0.311 Pa
at the temperature of:
25 °C

Additional information

Reliable QSAR calculations for the vapour pressure of DD-lactide and LL-lactide are available. The slightly differ since the calcuations take into account measured melting points as correction factor. Slightly deviating melting points results from unavoidable meausurement inaccuracies. From the two vapour pressure estimates (0.311 Pa for LL-lactide, 0.28 for DD-lactide) the higher one is adopted for dilactide in a worst-case approach.