Registration Dossier
Registration Dossier
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EC number: 215-445-8 | CAS number: 1326-83-6 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 53186.
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 19. - 23. March 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- photometric method
- Key result
- Type:
- log Pow
- Partition coefficient:
- -1.37
- Temp.:
- 20 °C
- pH:
- >= 9 - <= 9.2
- Conclusions:
- The log Pow of Solubilised Sulphur Black 1 was determined to be -1.37.
- Executive summary:
The partition coefficient (Pow) of the test item in n-octanol - water was determined according to OCD TG 107 using the shake flask method. Te Pow was found to be 0.043±0.006 (95% confidence interval) at 20 °C and pH ca. 9 which corresponds to log Pow of -1.37.
Reference
The calculated partition coefficient (Pow) and log Poware summarised in the following table. The nine log Powvalues were within a range of ± 0.3 log units and thus complied with the guidelines.
Table 6. Calculated partition coefficient (Pow) and log Pow
Ratio of solvents |
Partition coefficient |
Log Partition coefficient |
pH conditions |
||
Pow |
Mean |
Log Pow |
Mean |
mean |
|
1:1 |
0.036 0.036 0.039 |
0.037 |
-1.45 -1.45 -1.41 |
-1.43 |
9.1 |
1:2 |
0.057 0.046 0.053 |
0.052 |
-1.25 -1.33 -1.28 |
-1.29 |
9.2 |
2:1 |
0.045 0.041 0.036 |
0.041 |
-1.35 -1.39 -1.45 |
-1.39 |
9.1 |
Mean all±95% confidence interval |
0.043±0.006 |
- |
-1.37 |
- |
- |
Description of key information
The log Pow of Solubilised Sulphur Black 1 was determined to be -1.37.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -1.37
Additional information
The partition coefficient (Pow) of the test item in n-octanol - water was determined according to OCD TG 107 using the shake flask method. Te Pow was found to be 0.043±0.006 (95% confidence interval) at 20 °C and pH ca. 9 which corresponds to log Pow of -1.37.
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