Registration Dossier
Registration Dossier
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EC number: 255-707-9 | CAS number: 42204-14-8
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Justification for type of information:
- REPORTING FORMAT FOR THE ANALOGUE APPROACH
1. HYPOTHESIS FOR THE ANALOGUE APPROACH
Partition coefficient is only relevant for organic substances and as this substance is organometallic this endpoint is not relevant for the inorganic component of the substance. The Kow value for the organic component of the substance is therefore provided to provide information on the partitioning behaviour of this part of the substance.
2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
Source: acetic acid
Target: rhodium acetate
3. ANALOGUE APPROACH JUSTIFICATION
This substance is organometallic and therefore partition coefficient is only relevant for the organic component of the substance. The Kow value is therefore read across from acetic acid, the organic component of the substance. This approach is justified as the Kow value is read across from the organic component of the substance and provides sufficient information on the partitioning behaviour of this component. As this is the only component of this substance for which a Kow value is relevant this is considered to be an acceptable approach. - Reason / purpose for cross-reference:
- read-across source
- Type:
- log Pow
- Partition coefficient:
- -0.17
- Temp.:
- 20 °C
- Remarks on result:
- other: temperature assumed
- Conclusions:
- The log kow of acetic acid is -0.17..
- Executive summary:
Hansch et al. (1995) is a reliable, peer-reviewed handbook and so can be considered suitable for use as the key study for this endpoint. The log kow of acetic acid is -0.17.
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Principles of method if other than guideline:
- The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to Exploring QSAR, Hydrophobic, Electronic and Steric Constants states that it is an extensive compilation of published data. Each record is evaluated and the preferred value is identified for each substance. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of physico-chemical data.
- GLP compliance:
- not specified
- Type of method:
- other: Method details not stated, but result is taken from a reliable, peer-reviewed handbook
- Partition coefficient type:
- octanol-water
- Analytical method:
- not specified
- Type:
- log Pow
- Partition coefficient:
- -0.17
- Temp.:
- 20 °C
- Remarks on result:
- other: temperature assumed
- Conclusions:
- The log kow of acetic acid is -0.17..
- Executive summary:
Hansch et al. (1995) is a reliable, peer-reviewed handbook and so can be considered suitable for use as the key study for this endpoint. The log kow of acetic acid is -0.17.
Referenceopen allclose all
Description of key information
Partition coefficient is not relevant for inorganic substances, but as this substance has an organic component the log Kow for acetic acid, representative of the organic component of rhodium acetate, is read across to rhodium acetate. The log kow of acetic acid is -0.17. This value is read across to the organic component of rhodium acetate.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -0.17
Additional information
Partition coefficient is not relevant for inorganic substances, but as this substance has an organic component the log Kow for acetic acid, representative of the organic component of rhodium acetate, is read across to rhodium acetate.
Hansch et al. (1995) is a reliable, peer-reviewed handbook and so can be considered suitable for use as the key study for this endpoint. The log kow of acetic acid is -0.17. This value is read across to the organic component of rhodium acetate.
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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