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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:
15-07-2011 till 25-07-2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well conducted study, according to EU and OECD guidelines and certificate of analysis included in the report.
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
no
Type of method:
other: slow stirring
Water solubility:
33.6 µg/L
Temp.:
20 °C
Remarks on result:
other: pH not reported
Remarks:
pH not reported

The determined final result for water solubility of the test substance was an averaged value for 5 time points, 2, 4, 24, 48 and 72 hours and was calculated to be 33.6 µg/L. At time point 6 hours the detected value for water solubility differed more than 15% from the previous value and therefore this value was not used for calculation of the average value.

The results of determined concentration of test substance at the different time points are presented in table I.

Table I: Concentration test substance at different time points

Sample

Time period
(hrs)

Final conc.
(µg/L)

Average conc.
(µg/L)

Average conc.

(µg/L)

TX 423 t=2 hours I

2

31.4

31.2

33.6*

TX 423 t=2 hours II

2

30.9

 

 

 

 

TX 423 t=4 hours I

4

32.0

34.9

TX 423 t=4 hours II

4

37.8

 

 

 

 

TX 423 t=6 hours I

6

40.0

42.5

TX 423 t=6 hours II

6

44.9

 

 

 

 

TX 423 t=24 hours I

24

33.6

32.3

TX 423 t=24 hours II

24

30.9

 

 

 

 

TX 423 t=48 hours I

48

30.4

32.9

TX 423 t=48 hours II

48

35.5

 

 

 

 

TX 423 t=72 hours I

72

36.0

36.7

TX 423 t=72 hours II

72

37.4

           * average value calculated using results from 2, 4, 24, 48 and 72 hours

 

Conclusions:
Interpretation of results (migrated information): insoluble (< 0.1 mg/L)
The water solubility of 1,1,3,3-tetramethylbutyl peroxyneodecanoate is 33.6 µg/L at 20°C.
Executive summary:

The water solubility of 1,1,3,3-tetramethylbutyl peroxyneodecanoatewas determined based on OECD guideline 105 at a temperature of 20°C. The data on water solubility represent the saturation mass concentration of the test substance in water.

 

The determined final result for water solubility of the test substance was an averaged value for 5 time points, 2, 4, 24, 48 and 72 hours and was calculated to be 33.6 µg/L. At time point 6 hours the detected value for water solubility differed more than 15% from the previous value and was not used for calculation of the average value.

Description of key information

The water solubility of 1,1,3,3-tetramethylbutyl peroxyneodecanoate is 33.6 µg/L at 20°C.

Key value for chemical safety assessment

Water solubility:
33.6 µg/L
at the temperature of:
20 °C

Additional information