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Physical & Chemical properties

Vapour pressure

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Description of key information

A very low vapour pressure between 1.71 x 10E-13 Pa and 5.87E-27 Pa for ester species was calculated. As 10E-06 Pa is the lowest value for vapour pressure accepted in Cheasar, the vapour pressure was set to 10E-06 Pa.

Key value for chemical safety assessment

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

Additional information

No experimental results available.

The vapour pressure of Stearic acid, esters with methyl α-D-glucoside was estimated using ACDLabs software program. The vapour pressure of the product is caused by the most volatile compound contained, the residual water. All methyl glucose compounds have estimated vapour pressures below 0.1 Pa. The calculation yielded < 0.1 Pa at 20°C.

The vapour pressure of Stearic acid, esters with methyl α-D-glucoside was calculated using EPIWIN v 4.00, MPBPWIN v1.43 (modified Grain method). The calculation yielded a vapour pressure of 1.28E-15 mm Hg (1.71 x 10E-13 Pa); 5.09E-22 mm Hg (6.79E-20 Pa); 4.35E-28 mm Hg (5.81E-26 Pa) and 4.4E-29 mmHg (5.87E-27 Pa) at 25°C for the mono-, di-, tri- and tetraester respectively.

The same calculation model was used for the vapour pressure assessment of the source substance. The vapour pressure of Isostearic acid, esters with methyl α-D-glucoside was calculated using EPIWIN v 4.00, MPBPWIN v1.43 (modified Grain method). The calculation yielded a vapour pressure of 9.67E-15 mm Hg (1.29E-12 Pa); 1.84E-21 mm Hg (2.45E-19 Pa); 2.23E-27 mm Hg (2.97E-25 Pa) and 2.8E-29 mmHg (3.73E-27 Pa) at 25°C for the mono-, di-, tri- and tetraester respectively.

The very low vapour pressure was determined for target and source substances.

Based on these results no phase transition solid/gas is to be expected, the atmospheric concentrations of the test substance can be neglected.

Due to missing information about the applicability of the calculation model in respect to the substances under investigation the results should be treated with care.