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: 201-167-4 | CAS number: 79-01-6
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Several experimental studies, published in peer reviewed literature, notable limitations in design and/or reporting, but adequate for assessment
- Principles of method if other than guideline:
- The equation from TGD was used to calculate the key value
- GLP compliance:
- not specified
- Type:
- Koc
- Value:
- 141 L/kg
- Type:
- log Koc
- Value:
- 2.15 dimensionless
- 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
Referenceopen allclose all
Description of key information
From a formal point of view, a study on adsorption/desorption does not need to be conducted, because the log kow for TCE is 2.53, which is is clearly below the threshold of 3.
The calculated Log Koc for trichloroethylene of 2.15 (141 L/kg) is taken for assessment.
Key value for chemical safety assessment
- Koc at 20 °C:
- 141
Additional information
The available measured values range from 30 to 921. Rather than to try to derive a single value from the available data or select one of these values as the key parameter, the Koc value is calculated from the octanol-water partitioning coefficient (log Kow = 2.53) using the equation from the TGD (hydrophobics). This results in a Koc value of 141 l/kg (log value is 2.15), which is taken as reliable value for assessment.
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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