Cerium(3+) acetate

pH

Administrative data

Endpoint:

pH

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

Not stated

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Data source

Reference

Reference Type:

other company data

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: TIAG standard operating procedures AANC Determination of the pH value

Version / remarks:

2017

Deviations:

no

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

Cerium(3+) acetate

EC Number:

208-654-0

EC Name:

Cerium(3+) acetate

Cas Number:

537-00-8

Molecular formula:

C2H4O2.1/3Ce

IUPAC Name:

cerium(3+) triacetate

Test material form:

solid: granular

Results and discussion

pH value

pH value:

6.25

Temp.:

20 °C

Applicant's summary and conclusion

Conclusions:

Under the conditions of the study the pH of the test material was found to be 6.25.

Executive summary:

The pH of the test material was determined in accordance with the 'TIAG standard operating procedures AANC Determination of the pH value'.

Prior to measurement the pH meter was checked and calibrated with a buffer solution in the expected measurement range. The pH meter was calibrated via a three-point calibration. The slope of the electrode and the result of the control buffer were either listed in the ‘Prüfmittelkontrolblatt’ or ‘calibration report’. The electrode was rinsed with H2O dem., wiped dry and immersed for measurement into the solution. At first, 10 % solutions of the test material were prepared by stirring 10 g of sample material with 90 g of H2O dem. (Milli-Q water Type 1 water grade) for 30 minutes and then adjusting it to a temperature of 20 °C.

Under the conditions of the study the pH of the test material was found to be 6.25.