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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:
27-08-2012 till 31-08-2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well conducted study, according to OECD guideline and certificate of analysis included in the report.
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
2000
Deviations:
no
GLP compliance:
no
Type of method:
other: slow stirring
Water solubility:
> 500 g/L
Temp.:
20 °C
Remarks on result:
other: pH not reported
Remarks:
pH not reported

In a previous test the water solubility was determined to be more than 150 g/L. Based on this the initial concentration of about 1000g/L for the final part of the test was chosen.

The determined final result for water solubility of the test substance was calculated to be more than 500g/L. In the test set up about 50g of test substance and 50mL of deionised water was brought together. Because the test substance is a liquid this test set up resulted in a total volume of about 100mL. It was technically not possible to reach an initial concentration of 1000g/L because not less than 50mL of deionised water could be added to 50g of test substance as otherwise dilution of the test substance would be the case instead of dissolving the test substance in water. As described before 50g of test substance and 50mL of deionised water resulted in a total volume of about 100mL. As this was the maximum test substance-water ratio that could be used in the test set up the water solubility could not be determined at a higher value than about 500g/L, therefore this figure is used as maximum result for the test.

The individual results of determined concentration of test substance at the different time points are presented in Table I, duplicate water solubility results per time point are graphically displayed in Figure 1 in the attachment.

Table I: Concentration test substance at different time points

Sample

Time period
(hrs)


Final conc.

(g/L)

Average conc.
(g/L)

Tx 44B t=48 hours I

48

510

512

Tx 44B t=48 hours II

48

514

 

 

 

 

Tx 44B t=72 hours I

72

523

528

Tx 44B t=72 hours II

72

533

 

 

 

 

Tx 44B t=96 hours I

96

493

514

Tx 44B t=96 hours II

96

536

 

AVG total

518

 

To be reported

>500

 

Conclusions:
Interpretation of results (migrated information): very soluble (> 10000 mg/L)
The water solubility of 2,4-pentanedione, peroxide is more than 500 g/L at 20°C.
Executive summary:

The water solubility of 2,4-pentanedione, peroxide was determined according to OECD guideline 105 at a temperature of 20°C.

The water solubility of 2,4-pentanedione, peroxide is more than 500 g/L at 20°C.

Description of key information

The water solubility of 2,4-pentanedione, peroxide is more than 500 g/L at 20°C.

Key value for chemical safety assessment

Additional information