Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study results

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2015

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
CIPAC MT 75 (Determination of pH Values)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
2-butoxyethyl benzoate
EC Number:
226-685-8
EC Name:
2-butoxyethyl benzoate
Cas Number:
5451-76-3
Molecular formula:
C13H18O3
IUPAC Name:
2-butoxyethyl benzoate
Test material form:
liquid
Details on test material:
XUS40782.00 Coalescing Agent, batch R15FM03, purity: 99.8% by weight

Results and discussion

pH valueopen allclose all
pH value:
ca. 1.5
Temp.:
20 °C
Remarks on result:
other: pure test item
pH value:
ca. 5.3
Temp.:
20 °C
Concentration:
ca. 1 other: % (w/v)
Remarks on result:
other: mixture

Any other information on results incl. tables

The pH of two 1% (w/v) mixtures of the test item in double distilled water was measured using a906 Titrando (Metrohm, Herisau, Switzerland)and a combined glass electrode (glassglass electrode and reference electrode, Metrohm). Also the pH of the undiluted test item will be measured in duplicate.

The pH meter was calibrated using two standard buffer solutions at pH 4.00 and pH 9.22. At the start and at the end of the measurements, pH of these buffer solutions was measured to ensure proper performance of the pH meter.

 

For the preparation of the 1% (w/v) mixtures, accurately weighed amounts of 1.0094 g and 1.0065 g of the test item were transferred into a 100 ml measuring cylinder, containing about 50 ml water. The volume was made up to 100 ml with water, the cylinder was stoppered and the dispersion was shaken vigorously by hand until completely mixed or dispersed. After it was left to stand for 1 minute, the combined glass electrode was immersed into the liquid and the pH was measured without stirring. The pH value was recorded after 1 and 2 minutes.

Because the pH value changed more than 0.1 unit during this equilibration time, the pH was also recorded 10 minutes after immersion of the electrode.

 

The pH of the undiluted test item was determined directly. The electrode was immersed into the test item and the pH value was recorded after 1 and 2 minutes. Because the pH value changed more than 0.1 unit during this equilibration time, the pH was also recorded 10 minutes after immersion of the electrode.

 

The test was performed at 20.0±1.0°C.

Applicant's summary and conclusion

Conclusions:
The pH of the test item 2-butoxyethyl benzoate was 1.5 and the pH of the 1% (w/v) aqueous mixtures was 5.3 at 20 °C.
Executive summary:

The pH of the undiluted test item, 2-butoxyethyl benzoate, and of 1% (w/v) aqueous mixtures of the test item was measured using a 906 Titrando (Metrohm, Herisau, Switzerland).

The pH of the test item 2-butoxyethyl benzoate was 1.5 and the pH of the 1% (w/v) aqueous mixtures was 5.3 at 20 °C.