Registration Dossier
Registration Dossier
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EC number: 213-607-2 | CAS number: 993-13-5
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The partition coefficient of the test material was determined at room temperature, reported was a temperature of 20 °C. No further details about the methods used have been specified in this review.
- GLP compliance:
- no
- Type of method:
- other: no data
- Partition coefficient type:
- octanol-water
- Type:
- log Pow
- Partition coefficient:
- -2.28
- Remarks on result:
- other: no temperature reported
- Conclusions:
- The log Pow of methylphosphonic acid was reported to be -2.28.
Reference
Description of key information
Based on an expert statement the Partition Coefficient (logPow) was estimated for MPA. From this calculation resulted a log Pow of -1.5559 (at a pH of 4) which shall be used for risk assessment. As supporting information, the log D was calculated for the substance methylphosphonic acid by using the SPARC on-line calculator (for getting log Pow estimates covering the whole pH range). These calculated results, which unanimously are indicating the very low log Pow of the test tem, are further supported by a log Pow of -2.28 as actually measured for the test item (reliability of this study not assignable).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -1.556
- at the temperature of:
- 20 °C
Additional information
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