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Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
2014
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: This study is classified as reliable with restrictions because it is an acceptable and reliable study carried out by OECD ToolBox v.3.2.0. Meets generally accepted scientific principles, acceptable for assessment.

Data source

Reference
Reference Type:
other: software
Title:
QSAR ToolBox 3.2.0.103
Author:
OECD
Year:
2014
Bibliographic source:
http://www.oecd.org/env/ehs/risk-assessment/theoecdqsartoolbox.htm

Materials and methods

Principles of method if other than guideline:
Read-across from category members
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Type:
Constituent
Type:
Constituent
Type:
Constituent

Results and discussion

Vapour pressure
Temp.:
25 °C
Vapour pressure:
other: see below
Remarks on result:
other: 4.77E-08 mm Hg - Predicted from category members

Any other information on results incl. tables

Data of the target chemical (4.77E-08 mm Hg) is predicted from category members using read-across based on 5 values within the range 3.92E-14 - 7.50E-06 mm Hg from 5 nearest neighbours compared by prediction descriptors. Category members are single chemicals or mixtures and are selected based on the profile of the target chemical. Only chemicals having experimental data are listed in the category.

The target chemical FALLS within applicability domain of the prediction.

The descriptor values for the target chemical and the category members in case they are set of tautomers, set of metabolites or mixtures are calculated using the following rule(s):

1. "logP Multicase" - taking the weighted average value

2. "Similarity" - taking the weighted average value

The endpoint data used in the prediction is selected from the following database(s):

1. ECHA CHEM

The prediction is based on 5 values within the range 5.12 - 13.4, log(1/mm Hg)

Prediction confidence = ± 4.47, log(1/mm Hg) (95.0%)

Applicant's summary and conclusion

Conclusions:
By calculation with a reliable software, a vapour pressure of 4.77E-08 mm Hg has been predicted.