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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Study initiation date: 24 June 2009 Study completion date: 28. October 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
Adopted: 27th July 1995
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.6 (Water Solubility)
GLP compliance:
yes
Type of method:
column elution method
Key result
Water solubility:
15 mg/L
Temp.:
20 °C
pH:
4.4
Details on results:
The purified water used for the tests had a pH value of 4.4.

 Sample no.  Sampling time [h]  Mass of aqueous sample [g] 1)  Flow rate [mL/h]  Analysed carbon concentration [mg/L]  Concentration of the test item 2) [mg/L]  pH value 3)
 1   0.750  24.60  32.8  9.2  11.8  4.4 
2  0.773 25.42  32.9  10.2  13.1  4.4 
3 0.750  24.61  32.8  10.0  12.8  4.4 
4  0.752  24.65  32.8  11.8  15.1  4.4 
5 0.755  24.71  32.7  13.7  17.6  4.4 
6  1.500 26.50  17.7  10.3  13.2  4.4 
7 1.500  26.69  17.8  12.3  15.8  4.4 
8 1.500  26.21  17.5  12.5  16.0  4.4 
9 1.500  26.21  17.5  12.2  15.6  4.4 
10 1.500  26.49  17.7  13.8  17.7  4.4 

1) density = 1 g/mL

2) calculated from the carbon concentration of the sample solutions and the carbon content of the pure test item (78.0 %)

3) The purified water used for the tests had a pH value of 4.4.

 Set of five successive samples Mean value [mg/L]  Standard deviation [mg/L]  Relative standard deviation [%] 
 Samples 1 to 5 (flow rate type 1)  14.1 2.3  16.4 
 Samples 6 to 10 (flow rate type 2)  15.7  1.6  10.3

In the first and second set of five successive samples (at two different flow rates) the relative standard deviation (repeatability) was smaller than 30 %. Thus the test was satisfactory.

   First set of five successive samples    Second set of five successive samples  Mean value
 Water solubility 14.1 mg/L  15.7 mg/L  15 mg/L 

The test item remaining on the quartz sand was 0.46 %. This amount would be sufficient to saturate 1.3 L of water.

Conclusions:
Water solubility (at 20°C): 15 mg/L
Executive summary:

The water solubility of the test item was determined according to OECD guideline no. 105 [adopted on 27 July 1995] and EU test method A.6 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the column elution method.

Water solubility (at 20°C): 15 mg/l

Description of key information

Water solubility (OECD 105, column elution method): 15 mg/L at 20 °C.

Key value for chemical safety assessment

Water solubility:
15 mg/L
at the temperature of:
20 °C

Additional information

The water solubility of the test item was determined according to OECD guideline no. 105 [adopted on 27 July 1995] and EU test method A.6 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the column elution method.

Water solubility (at 20°C): 15 mg/L