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Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Test procedure in accordance with national standard methods (OECD) without GLP.
Qualifier:
according to guideline
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Deviations:
no
GLP compliance:
no
Type of method:
shake-flask method to: flask method
Partition coefficient type:
octanol-water
Specific details on test material used for the study:
- Name of test material (as cited in study report): Alcohols, C2-33, manuf. of, by-products from overheads
- Substance type: Product, HF-1000
- Physical state: clear colourless liquid
- Odour: oily/solvent
- Lot/batch No.: 1881046
Key result
Type:
log Pow
Partition coefficient:
5.95
Temp.:
20 °C
pH:
ca. 7
Details on results:
Partition Coefficient estimation:
Log P = (log (Octanol solubility/Water solubility)

The highest octanol solubility test (89.8%, i.e. 898000 mg/l), the water solubility value is 1 mg/l.

log P = log (898000/1) = 5.95

Octanol solubility results:

 Test [%]  Weight of sample [g]  Weight of octanol [%]  Total weight [g]  w/w [g]
 10  0.1026  0.8994  1.0020  10.2
 20  0.2125  0.7914  1.0039  21.2
 30  0.3015  0.6946  0.9961  30.3
 40  0.4001  0.6037  1.0038  39.9
 50  0.4001  0.6037  1.0016  49.9
 60  0.6005  0.3996  1.0001  60
 70  0.6993  0.2986  0.9979  70.1
 80  0.7983  0.1974  0.9957  80.2
 90  0.9017  0.1027  1.0044  89.8

No signs of phase separation or precipitation were present in any test; therefore the test substance was miscible in all proportions in 1 -octanol.

Executive summary:

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, alkenes is measured according to OECD 107.

The log POW was determind to be 5.95.

Description of key information

Key value for chemical safety assessment

Log Kow (Log Pow):
5.95
at the temperature of:
20 °C

Additional information

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, alkenes is measured according to OECD 109.

The log POW was determined to be 5.95.

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