Registration Dossier
Registration Dossier
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EC number: 701-017-2 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The partition coefficients of the substance were calculated using the software KOWWIN v 1.66 of the U.S. Environmental Protection Agency on the basis of the structural formula of the test item components and possible hydrolysis products. As the substance is a UVCB substance hydrolysing at contact with water, several Kow values were estimated:
- log Kow of the constituents ranged form 3.74 (2,4- /2,6-TDI) to 6.64 (low molecular TDI-Biuret)
- log Kow of 2,4- and 2,6-TDA is 0.16
- for log Kow of hydrolysis products are upwards no limits
(Currenta, 2010)
Key value for chemical safety assessment
Additional information
The substance is insoluble or only poorly soluble in water. Even using a co-solvent, the test item immediately precipitates after contact with water. Additionally, it hydrolyses in a very short time (within hours) as could be shown in a hydrolysis test.
Therefore, an experimental determination of the partition coefficient according to OECD TG 107 or 117 (EC 440/2008 A.8.) was not possible.
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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