Registration Dossier
Registration Dossier
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EC number: 904-153-2 | CAS number: -
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- study scientifically not necessary / other information available
- 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
Reference
Description of key 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.
Key value for chemical safety assessment
- Koc at 20 °C:
- 13.15
Additional information
Screening and/or higher tier studies investigating the adsorption potentialof the Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP)do not need to be conducted due to the low octanol water partition coefficients of the substance. The adsorption potential of the substance is related to this parameter. Therefore, the Koc can be estimated from Kow as outlined in ECHA guidance on information requirements and chemical safety assessment Chapter R.6: QSARs and grouping of chemicals, May 2008. This is a type of SAR which is directly implemented in the TGD and in EUSES. The following equation was used: logKoc = 0.52 logKow + 1.02 (TGD, Part III, 2003: table 4).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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