Registration Dossier
Registration Dossier
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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 209-161-3 | CAS number: 557-20-0
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance reacts violently during the performance of the test
- Conclusions:
- Determination of partition coefficient n-octanol/water is technically not
feasible for zinc alkyls and not required because the substance reacts
violently during performance of the test and therefore cannot be conducted.
Reference
Description of key information
The endpoint is waived: The substance is water reactive.
Calculated value is not deemed valid as is does not take rapid violent reaction with water into account.
Key value for chemical safety assessment
Additional information
According to the Annex VII Standard Information Requirements for REACH, determination of partition coefficient n-octanol/water is required. Column 2 - specific rules for adaption from column 1 - states that partition coefficient n-octanol/water does not need to be determined in case substance reacts violently during the performance of the test. Zinc alkyls are highly reactive towards oxygen (air), water and alcohols as explained below. They are exclusively marketed in liquid state and shipped under UN transport class 4.2 (substances liable to spontaneous combustion I pyrophoric liquids) or at least under class 4.3 (substances which in contact with water emit flammable gases).
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.
