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Physical & Chemical properties

Water solubility

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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-03 to 2017-05-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

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
Qualifier:
according to
Guideline:
EPA OPPTS 830.7840 (Water Solubility)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
flask method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Details on test material:
White to light yellow powder
Specific details on test material used for the study:
- Batch n°: A16FC1793
- Analytical purity: 100.2%
- Expiration date: 08 June 2018 (retest date)
- Storage condition: at room temperature

Results and discussion

Water solubility
Key result
Water solubility:
0.384 g/L
Conc. based on:
test mat. (dissolved fraction)
Remarks:
concentration analysed after centrifugation
Loading of aqueous phase:
2.65 g/L
Incubation duration:
>= 24 - <= 72 h
Temp.:
20 °C
pH:
>= 9.1 - <= 9.4
Details on results:
Preliminary test
The content of test item dissolved in the water sample was 0.505 g/L after two centrifugation steps

Main test
The results for the samples taken at 24, 48 and 72 hours are given in the table in the next section.
The 24-hour measurement was significantly lower than the 48- and 72- hour measurements (maximum difference (MD) > 15%). Based on this, the water solubility of the test item was given as the mean value of the 48- and 72-hour measurements.
No test item was detected in the pretreated sample from the blank water mixture.

Any other information on results incl. tables

The results for the samples taken at 24, 48 and 72 hours are given in the table underneath.

 Stirring time (hours) Analysed concentration (g/L)   Mean (g/L)  Maximum Difference (MD) (%)  pH
 24  0.309 0.3841  13  9.4
 48  0.360      9.3
 72  0.408      9.1

1: Calculated with the 48- and 72-hour measurements.

Applicant's summary and conclusion

Conclusions:
The flask method was applied for the determination of the water solubility of JNJ-118781-AAA (T000841).
The water solubility of the test item at 20°C was 0.384 g/L.
The pH of the aqueous samples was 9.1 – 9.4.