Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

vapour pressure
Type of information:
Adequacy of study:
weight of evidence
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The quoted value is an estimate based on an internationally recognised modelling programme.
Justification for type of information:
QSAR prediction

Data source

Reference Type:
other: QSAR

Materials and methods

Principles of method if other than guideline:
Modified Grain Method. Quantitative Structural-Activity Relationship based upon chemical structure devised from the SMILES code drawn from a database of >40,000 chemicals (called PHYSPROP©) that is included in the EPI Suite™ software.

Test material

Constituent 1
Reference substance name:
Benzenesulfonic acid, C16-24-alkyl derivs.
EC Number:
EC Name:
Benzenesulfonic acid, C16-24-alkyl derivs.
Cas Number:
4-icosylbenzenesulfonic acid
Constituent 2
Reference substance name:
Benzenesulfonic acid, C16-24-alkyl derivs
Benzenesulfonic acid, C16-24-alkyl derivs

Results and discussion

Vapour pressure
25 °C
Vapour pressure:
0 kPa

Applicant's summary and conclusion

The vapour pressure of the substance is considered to be 1.81E-7 kPa at 25°C based on a QSAR driven by the EPI Suite v4.0.
Executive summary:

Removal of mineral oil is not possible without degrading the chemical struture of the substance. It was therefore considered acceptable to create a weight of evidence approach based upon Quantitative Structural-Activity Relationship (QSAR). The QSAR model of choice was the EPI Suite v4.0 published by the United States Environmental Protection Agency, which has estimated the vapour pressure to be 1.81E-7 kPa at 25°C