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EC number: 905-898-6
CAS number: -
Due to the calculated Koc for the uncharged molecule, adsorption to the solid soil phase (e.g. clay) is not expected.
The major constituent TEA is not expected to adsorb to suspended solids
and sediment based upon the log Koc as calculated for the uncharged
molecule. However, a pka value of 7.86 indicates that the molecule will
partly exist as a cation in the environment and cations generally adsorb
more strongly to the soils organic carbon and clay than their neutral
counterparts. According to a calculation based on the formula as given
by Franco & Trapp, 2008, the fully charged molecule has a log Koc value
of 1.24 at pH 7.0.
In a study conducted by West in 1996 it was demonstrated, that TEA
rapidly degrades according to the definition as laid down in the
Guidance on the application of CLP criteria (Guidance to regulation (EC)
No 1272/2008 on classification, labelling and packaging (CLP) of
substances and mixtures), further it also rapidly degrades in soil with
a half-life of 1.8 days. Additionaly, in a ready test performed by
Gerike (1978) according to a precursor of the Modified OECD Screeening
Test (OECD TG 301 E) the substance turned out to be readily
According to the REACH legislation Annex VIII 9.3.1 a study on the
adsorption/desorption does not need to be conducted if the substance and
its relevant degradation products decompose rapidly. Therefore, a
screening test on the adsorption of TEA is not required.
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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