Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28 March-27 June 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant study, not according to guideline but result is reliable
Cross-reference
Reason / purpose:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report Date:
2011

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
During the study on water solubility using the flask method (see section 4.8), the pH of the equilibrated water samples was determined.
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Identification: Neosolue-Aqulio
Molecular formula: C20H36O8
Molecular weight: 404.5
CAS Number: 922165-31-9
Description: Clear colourless to very pale yellow liquid
Batch: TVI-714
Purity: 99.5% (GC)
Test substance storage: At room temperature in the dark
Stability under storage conditions: Stable
Expiry date: 07 October 2012 (Retest date)

Results and discussion

pH value
pH value:
3.6
Temp.:
20 °C
Concentration:
51.1 g/L

Any other information on results incl. tables

The results for the samples taken at 24, 48 and 72 hours are given in the Table below. The first value is for the two times centrifuged samples and the second value for the three times centrifuged samples.

Stirring time
[hours]

Analysed concentration
[g/l]

Mean
[g/l]

MD
[%]

pH

24

61.8(A)

51.1

4.2

3.6

 

51.6

 

 

3.6

48

49.7

 

 

3.6

 

51.8

 

 

3.6

72

50.9

 

 

3.6

 

51.5

 

 

3.6

(A)Considered to be an outlier according to Dixons-Q test, therefore excluded from calculations

The pH of the aqueous samples at 20°C and a concentration of 51.1 g/l was 3.6.

Applicant's summary and conclusion

Conclusions:
The pH of an aqueous solution of the test substance (concentration 51.1. g/L) at 20°C is 3.6.