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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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
Qualifier:
according to guideline
Guideline:
other: REACH Guidance on QSARs R.6
Principles of method if other than guideline:
Calculation based on SPARC version v4.6, "Properties" calculation type

- Software tool(s) used including version: SPARC v4.6
- Model(s) used: Properties - Vapor Pressure (Pa)
The model utilizes a conventional LFER (Linear Free Energy Relationships), SAR (Structure Activity Relationships) and PMO (Perturbed Molecular Orbital) theory. For the complete method's description see field 'Any other information on materials and methods incl. tables'.
The datasets used for the model development (315 molecules) and for the external validation (747 molecules) are described in the field 'Any other information on materials and methods incl. tables'.
- Model description: see field 'Any other information on materials and methods incl. tables'.
- Justification of QSAR prediction: see field 'Justification for type of information' and 'overall remarks'.
GLP compliance:
no
Type of method:
other: QSAR
Temp.:
20 °C
Vapour pressure:
>= 0 - <= 0 Pa
Remarks on result:
other: Range estimated based on QSAR calculations with the main constituents of the substance.

QSAR result; transition/decomposition is not specified/reported. For detailed description of the model and its applicability, see "Any other information on materials and methods incl. tables".

Description of key information

< 0.001 Pa at 20 °C (QSAR, ARChem SPARC. version 4.6)

Key value for chemical safety assessment

Additional information

The vapour pressure of the substance isooctadecyl pivalate (CAS 58958-60-4) was determined by QSAR, calculation with SPARC v4.6 for the main components of isooctadecyl pivalate. The result of 1.24E-04 - 9.43E-07 P at 20 °C indicates that the substance is non-volatile and the vapour pressure is estimated as < 0.001 Pa.