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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Environmental fate & pathways

Henry's Law constant

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Administrative data

Link to relevant study record(s)

Description of key information

From the water surface, the hydrolysis product 2-ethylhexanol will slowly evaporate into the atmosphere.

Key value for chemical safety assessment

Additional information

QSAR-disclaimer


In Article 13 of Regulation (EC) No 1907/2006, it is laid down that information on intrinsic properties of substances may be generated by means other than tests, provided that the conditions set out in Annex XI (of the same Regulation) are met.


According to Annex XI of Regulation (EC) No 1907/2006 (Q)SAR results can be used if (1) the scientific validity of the (Q)SAR model has been established, (2) the substance falls within the applicability domain of the (Q)SAR model, (3) the results are adequate for the purpose of classification and labeling and/or risk assessment and (4) adequate and reliable documentation of the applied method is provided.


For the assessment of 2-ethylhexyl chloroformate and the hydrolysis product 2-ethylhexanol (Q)SAR results were used for the estimation of the Henry’s Law constant. The criteria listed in Annex XI of Regulation (EC) No 1907/2006 are considered to be adequately fulfilled and therefore the endpoint(s) sufficiently covered and suitable for risk assessment.


Therefore, further experimental studies on the Henry’s Law Constant are not provided.


 


Assessment:


The parent compound 2-ethylhexyl chloroformate rapidly hydrolyses to 2-ethylhexanol, HCl and CO2. The experimentally derived HLC for the hydrolysis product 2-ethylhexanol of 1.54 Pa m³/mol at 25 °C indicates low evaporation potential (EPISuite, HENRYWIN v3.20, BASF SE, 2021). The substance is within the applicibilaty domain of the model.