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Physical & Chemical properties

Water solubility

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Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
08 June - 19 July, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
July 27, 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
19 March 2014
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7840 (Water Solubility)
Version / remarks:
March 1998
Deviations:
no
Principles of method if other than guideline:
The solubility of the test item is below 0.01 g/L, so the column elution method should be applied according to the guideline. However, column elution method is not feasible with this test item, because coating of the support material is not possible due to the low solubility of the test item in any solvent. Therefore, the flask method was applied.
GLP compliance:
yes (incl. QA statement)
Type of method:
flask method
Remarks:
shake flask method
Specific details on test material used for the study:
Expiry date:September 29, 2020
Key result
Water solubility:
>= 3.11 - <= 3.63 mg/L
Conc. based on:
act. ingr.
Loading of aqueous phase:
5 000 mg/L
Incubation duration:
>= 24 - <= 72 h
Temp.:
20 °C
pH:
>= 4.42 - <= 4.62

Results of the determination of test item concentrations

Sampling time

Measured concentration of test item (mg/L)

Measured pH

Test vessels

Mean withthe 95% confidence intervals

After 24h

3.28

3.29 ± 0.04

4.58

3.29

4.61

3.31

4.62

After 48h

3.31

3.33 ± 0.04

4.56

3.34

4.59

3.35

4.58


Results of the determination of test item concentrations (continued)

Sampling time

Measured concentration of test item (mg/L)

Measured pH

Test vessels

Mean withthe 95% confidence intervals

After 72h

3.51

3.49 ± 0.04

4.42

3.48

4.46

3.49

4.47

Solubility of the test item (mg/L)

3.37 ± 0.26

-

RSD%

3

-

Ultra-pure water

< LOQ

6.89 – 6.92
Conclusions:
In conclusion the water solubility of Black DB was determined to be 3.37 ± 0.26 mg/L (95% confidence interval) at 20 ± 1 °C using the shake-flask method for the performance.
Executive summary:

In the course of this study thewater solubility of test item was determined at 20 ± 1 °C using the shake-flask method. The water solubility was determined to be 3.37 ± 0.26 mg/L (95% confidence interval).

 

Description of key information

The water solubility of Black DB was determined to be 3.37 ± 0.26 mg/L (95% confidence interval)  at 20 ± 1 °C using the shake-flask method for the performance.  

Key value for chemical safety assessment

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

Additional information