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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:
21-11-2011 tiil 23-12-2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well conducted study, according to OECD guideline, certificate of analysis included in the report.
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
2000
Deviations:
no
GLP compliance:
no
Type of method:
flask method
Key result
Water solubility:
2.8 g/L
Temp.:
20 °C
pH:
7

In the preliminary test the water solubility was determined to be between 1 and 5 g/L. Based on this the initial concentration of about 10 g/L for the final part of the test was chosen.

The determined final result for water solubility of the test substance was an averaged value for 3 time points after adding the test substance to the water, 24, 48 and 72 hours and was calculated to be 2.8 g/L. The pH value was measured to be 7 at all time points.

The individual results of determined concentration of test substance and the pH values at the different time points are presented in Table I, duplicate water solubility results per time point are graphically displayed in the report.

Table I: Concentration test substance and pH values at different time points

Sample

Time period
(hrs)


Final conc.

(g/L)

Average conc.
(g/L)


pH

Tx TMBH t=24 hours I

24

2.9

2.9

7

Tx TMBH t=24 hours II

24

2.9

7

 

 

 

 

 

Tx TMBH t=48 hours I

48

2.9

2.8

7

Tx TMBH t=48 hours II

48

2.8

7

 

 

 

 

 

Tx TMBH t=72 hours I

72

2.8

2.8

7

Tx TMBH t=72 hours II

72

2.8

7

 

 

AVG total

2.8

 

Conclusions:
Interpretation of results (migrated information): soluble (1000-10000 mg/L)
The water solubility of 1,1,3,3-tetramethylbutyl hydroperoxide is 2.8 g/L at 20°C.
Executive summary:

The water solubility of 1,1,3,3-tetramethylbutyl hydroperoxidewas determined in duplicate 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 3 time points, 24, 48 and 72 hours and was calculated to be 2.8 g/L.


Description of key information

The water solubility of 1,1,3,3-tetramethylbutyl hydroperoxide is 2.8 g/L at 20°C.

Key value for chemical safety assessment

Water solubility:
2.8 g/L
at the temperature of:
20 °C

Additional information