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Diss Factsheets

Administrative data

Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
shake-flask method to: flask method
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
prop-2-en-1-yl 2-hydroxy-2-methylpropanoate
EC Number:
700-908-3
Cas Number:
19444-21-4
Molecular formula:
C7H12O3
IUPAC Name:
prop-2-en-1-yl 2-hydroxy-2-methylpropanoate

Results and discussion

Partition coefficientopen allclose all
Type:
Pow
Partition coefficient:
ca. 4.4
Temp.:
25 °C
Type:
log Pow
Partition coefficient:
ca. 0.64
Temp.:
25 °C

Any other information on results incl. tables

Test Mixture

P1

P2

P3

P4

P5

P6

Amount of CA2215

(mg)

30.195

30.096

55.143

55.935

17.127

16.038

Volume of Octanol

(ml)

20.0

20.0

40.0

40.0

10.0

10.0

Volume of Water

(ml)

20.0

20.0

20.0

20.0

20.0

20.0

Concentration of CA2215in the Octanol Phase

(mg/ml)

 

 

Average

1268.071

1275.971

1345.881

 

1296.641

1275.284

1275.001

1260.985

 

1270.423

1291.496

1289.078

1315.953

 

1298.842

1296.298

1309.079

1302.961

 

1302.779

1114.299

1138.276

1110.840

 

1121.138

995.502

1015.274

1026.415

 

1012.397

Concentration of CA2215 in the Aqueous Phase

(mg/ml)

 

 

Average

305.953

307.399

303.000

 

305.451

311.572

307.996

296.062

 

305.210

303.621

299.440

300.231

 

301.097

289.350

319.061

306.423

 

304.945

241.202

240.523

242.555

 

241.427

215.117

206.468

212.780

 

211.455

pH of the aqueous phase

5.45

5.22

5.02

4.96

5.17

5.33

Amount of CA2215 in the Octanol Phase

(mg/ml)

25.933

25.408

51.954

52.111

11.211

10.124

Amount of CA2215 in the Aqueous Phase

(mg/ml)

6.109

6.104

6.022

6.099

4.829

4.229

Total Amount of CA2215 in the two Phases

(mg)

32.042

31.512

57.976

58.210

16.040

14.353

Recovery

(%)

106

105

105

104

93.7

89.5

Pow

4.245

4.162

4.314

4.272

4.644

4.788

 

Average Powfor each volume ratio

4.204

4.293

4.717

 

Average Pow±Standard Deviation

4.4± 0.25

 

Logarithm to base 10 of Pow

0.64

The result of the total average, it’s logarithm to base 10 and the standard and the standard deviation have been quoted correct to two significant figures. 

Applicant's summary and conclusion

Conclusions:
The octanol / water partition coefficient (Pow) and it’s logarithm to base 10 (log Pow) were determined, at 25°C, to be:
Pow = 4.4 ± (0.25)
Log Pow = 0.64
Executive summary:

This study was performed in accordance with the OECD guideline for the testing of The octanol / water partition coefficient of CA 2215 has been determined using the shake-flask method. 

chemicals, number 107, July 1995, the EEC method A.8., Official Journal of the European Communities, 92/69/EEC, 1992, and the Product Properties Test Guideline, OPPTS 830.7550, USA, 1996. 

The octanol / water partition coefficient (Pow) and it’s logarithm to base 10 (log Pow) were determined, at 25°C, to be:

Pow            =  4.4±(0.25)

Log Pow      =  0.64

 

The figure in parentheses represents one standard deviation about the mean value and all values have been quoted correct to two significant figures.