Registration Dossier
Registration Dossier
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EC number: 219-045-4 | CAS number: 2338-05-8
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Justification for type of information:
- A review of behaviour in water and solvents was conducted.
The review concludes that for organo-metallic salts, it is not possible to assess a direct partition coefficient
A coefficient in line with the organic anion has been used for the CSA - Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Assessment of solubility of the substance and dissociation properties. The partition coeficient of the organic anion was considered.
- GLP compliance:
- no
- Type of method:
- estimation method (solubility ratio)
- Partition coefficient type:
- octanol-water
- Analytical method:
- other: Calculation method based on literature
- Type:
- log Pow
- Partition coefficient:
- < 1
- Temp.:
- 20 °C
- pH:
- ca. 3.5
- Conclusions:
- In common with other organic salts of metals, no reliable partition coefficient is possible to obtain in view of the dissociation and intrinsic insolubility of the dissociated metal ion. However, using the potential partition coefficient of the organic ion, an assessment is possible. Although citric acid has a Log Kow < 0, a conservative value of Log 1 is recommended for ferric citrate.
A nominal temperature of 20 C is used for the assessment.
The citrate rapidly biodegrades in the environment and can be disregarded for purposes of environmental risk assessment.
Reference
Description of key information
A review of behaviour in water and solvents was conducted.
The review concludes that for organo-metallic salts, it is not possible to assess a direct partition coefficient
A coefficient in line with the organic anion has been used for the CSA
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 1
- at the temperature of:
- 20 °C
Additional information
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