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Physical & Chemical properties

Vapour pressure

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Description of key information

The estimated vapour pressure of MAPTAC is 2.52E-07 Pa at 25°C (Mackay Method, Epiwin 4.1). However, as the vapour pressure is below the lowest value used by Chesar for calculation (0.01 Pa), 0.001 Pa is used as key value for chemical safety assessment.

Key value for chemical safety assessment

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

Additional information

A study on vapour pressure is technically not feasible (REACH Regulation, Annex XI, 2): The calculated vapour pressure of 2.52E-07 Pa at 25°C (Mackay Method, Epiwin 4.1) is outside of the specifications of the usual methods. In addition, the substance is manufactured and handled as a solution in water, therefore only the vapour pressure of the solvent (water) would be measured.

The vapour pressure is below the lowest value used by Chesar for calculation (0.01 Pa), thus 0.001 Pa was used as key value for chemical safety assessment.