Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

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

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

Key value for chemical safety assessment

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

Additional information

Based on the REACH Regulation, Annex VII, Column 2, if the melting point is between 200 and 300 °C, a limit value of vapour pressure based on measurement or a recognised calculation method is sufficient.

According to the OECD Guideline 104 the vapour pressure of liquids and solids can be estimated by use of the modified Watson correlation, the only experimental data required is the normal boiling point. The method is applicable over the pressure range from 105 Pa to 10-5 Pa. Nevertheless for the Substance no boiling point was detected up to 440 °C, therefore the vapour pressure was predicted by MPBPWIN as implemented in EPI Suite v4.11, by using smile notation of the substance as input.