Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2014-02-18 to 2014-07-03
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report Date:
2014

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
ASTM D1293 (Standard Test Methods for pH of Water)
Deviations:
no
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid

Reagents

Reagent:
water

Titration of acidity and alkalinity

Details on titrant used:
Apparatus: - Metrohm Titrino 736 (Metrohm)
-analytical balance (Mettler-Toledo)
- thermometer (Morgenbrot)
Reagents: - purified water from laboratory equipment
-buffer pH 4, 7 and 9 (Metrohm) for calibration

Results and discussion

pH value
Key result
pH value:
5.3
Temp.:
24.4 °C
Concentration:
10 other: weight-%

Any other information on results incl. tables

For the concentration of 10 weight-% in water, 10.0093 g of the test item were weighted and fi lled up to 1 00 g with purified water.

The clean glass electrode is given in the test solution. After reaching a constant measuring value this was red off (temperature: 24.4 °C).

 Test item concentration  First run  Second run
 10 weight-% in water  5.27  5.25
 mean value 5.3

Applicant's summary and conclusion

Conclusions:
pH-value of double determination: 5.3
Executive summary:

pH-value of double determination: 5.3