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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
According to the REACH Regulation (EC 1907/2006), Annex VII, Column 2, if the melting point is between 200°C and 300°C, a limit value of vapour pressure based on measurement or a recognised calculation method is sufficient.
Principles of method if other than guideline:
Estimate by MPBPWIN as implemented in EPI Suite v4.11.
Temp.:
25 °C
Vapour pressure:
0 Pa
Conclusions:
Estimated vapour pressure is 3.72E-8 Pa at 25 °C (modified Grain method).
Executive summary:

Method

Estimate of vapour pressure carried out by MPBPWIN using modified Grain method as implemented in EPI Suite v4.11.

Results

Estimated vapour pressure at 25 °C is 3.72E-8 Pa.

Description of key information

Negligible.

Key value for chemical safety assessment

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

Additional information

According to the REACH Regulation (EC 1907/2006) Annex VII Column 2: the study does not need to be conducted if the melting point is above 300 °C. If the melting point is between 200 °C and 300 °C, a limit value based on measurement or a recognised calculation method is sufficient.

The melting point of test item is between 206 and 236 °C, followed by degradation; therefore an estimated value of vapour pressure has been calculated by EPI Suite 4.1.

The value of vapour pressure has been calculated by EPIsuite 4.1:

Vp = 0.0000000372 Pa at 25 °C