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Environmental fate & pathways

Adsorption / desorption

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Link to relevant study record(s)

Reference
Endpoint:
adsorption / desorption: screening
Data waiving:
other justification
Justification for data waiving:
the study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter

Description of key information

Based on the physicochemical properties, all the components of the substance Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) can be expected to have a low potential for adsorption to soil. The octanol-water partition coefficient for Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) i.e. log Pow = 0.19 (CTF), -0.2 (DMP) and -0.8 (TMP) is low. A waiver is proposed for this endpoint in line with Column 2 of Annex VIII of the REACH regulation, where  no study is required if the logPow is below the trigger of 3 as the substance can be expected to have a low potential for adsorption. 

Key value for chemical safety assessment

Additional information

Based on the physicochemical properties, all the components of the Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) can be expected to have a low potential for adsorption to soil. The octanol-water partition coefficient for the Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) i.e. log Pow = 0.19 (CTF), -0.2 (DMP) and -0.8 (TMP) is low. A waiver is proposed for this endpoint in line with Column 2 of Annex VIII of the REACH regulation, where no study is required if the logPow is below the trigger of 3 as the substance can be expected to have a low potential for adsorption.