Registration Dossier

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
flask method

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Water solubility
Water solubility:
>= 157 - <= 169 kg/m³
Temp.:
20.1 °C
pH:
7.87

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): very soluble (> 10000 mg/L)
Executive summary:

In a preliminary study, the solubility of the test item in water was estimated as 10 - 50 g/l.

In the main study, approx. 12.5 g were weighed into each of six individual vessels, 50 ml water was added, and the vessels were shaken at room temperature.

On days 1 and 2, vessel 1 was taken from the shaking apparatus and stored at 20 +-0.1°C for equilibration. Samples were taken, filtrated and diluted in order to reach the calibrated range. Then they were analysed using photometric absorption at 190 nm as shaking of the test vessels was continued.

No differences above 15% in the concentration of the solution could be determined between the sampling dates 1, 2 and 3, supporting the hypothesis, that the maximum concentration of the test item had been reached. Therefore, on day 3, vessels 2 - 6 were sampled and analysed in the same fashion.

At the plateau, the concentration of B 1061 in water had reached

163 +- 6 g/l (=kg/m³ in SI units) at 20 +-0.5 °C

(mean value +- standard deviation of five individual vessels).