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EC number: 204-934-1 | CAS number: 129-17-9
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Experimental result using OECD recommeded guidelines
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- no
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
- Type:
- log Pow
- Partition coefficient:
- -2.783
- Temp.:
- 25 °C
- Remarks on result:
- other: pH details not available
- Conclusions:
- The partition coefficient of test item CAS No. 129-17-9 was determined as per the shake flask method (OECD Guideline-107). The log Pow value was found to be -2.783±0.772 at 25oC.
- Executive summary:
The Partition coefficient (Pow) ofhydrogen[4-[4-(diethylamino)-2',4'-disulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, sodium salt(CAS No. 129-17-9) at 25°C was estimated according to the OECD Guideline No. 107, adopted on 27thJuly 1995,”Shake Flask Method”. The log Pow value was found to be -2.783±0.772 at 25oC.
Reference
Table-1
WATER PHASE | ||||||
Assay | Ratio (n-octanol/water) | V(ml) | Concentration (mg/l) of test item | Mean concentration mg/l | Dilution factor | |
R1 | R2 | |||||
Assay-1 | 1/2 | 40 | 220.770 | 221.932 | 221.351 | 25 |
Assay-2 | 1/1 | 30 | 410.719 | 413.519 | 411.939 | 25 |
Assay-3 | 2/1 | 20 | 773.558 | 780.146 | 776.852 | 25 |
Table-2
OCTANOL PHASE | ||||||
Assay | Ratio (n-octanol/water) | V(ml) | Concentration (mg/l) of test item | Mean concentration mg/l | Dilution factor | |
R1 | R2 | |||||
Assay-1 | 1/2 | 20 | 3.399 | 3.398 | 3.398 | 2 |
Assay-2 | 1/1 | 30 | 2.831 | 2.936 | 2.883 | 2 |
Assay-3 | 2/1 | 40 | 6.859 | 6.845 | 6.852 | 2 |
Description of key information
The Partition coefficient (Pow) of hydrogen[4-[4-(diethylamino)-2',4'-disulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, sodium salt (CAS No. 129-17-9) at 25°C was estimated according to the OECD Guideline No. 107, adopted on 27thJuly 1995,”Shake Flask Method”. The log Pow value was found to be -2.783±0.772 at 25oC.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -5.34
Additional information
The Partition coefficient (Pow) ofhydrogen[4-[4-(diethylamino)-2',4'-disulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, sodium salt(CAS No. 129-17-9) at 25°C was estimated according to the OECD Guideline No. 107, adopted on 27thJuly 1995,”Shake Flask Method”. The log Pow value was found to be -2.783±0.772 at 25oC.
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