Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant, available as unpublished report, no restrictions, fully adequate for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Principles of method if other than guideline:
The pH value of an aqueous liquid is defined as the common logarithm of the reciprocal of the hydrogen ion concentration expressed in g/l.

The pH value of the test item is determined by means of a pH meter and a glass electrode.
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Ammonium perrhenate
EC Number:
237-075-6
EC Name:
Ammonium perrhenate
Cas Number:
13598-65-7
Molecular formula:
H4N.O4Re
IUPAC Name:
Ammonium oxido(trioxo)rhenium
Details on test material:
Batch no: 17709.
Solid, white powder.

Results and discussion

pH value
pH value:
5.3
Temp.:
25 °C
Concentration:
99.9 g/L

Applicant's summary and conclusion

Conclusions:
The pH value of the aqueous solution of the test item (0.10 %) was reported to be 5.3.

Executive summary:

This is a GLP compliant study considered suitable for use as the key study for this endpoint. The pH value of the aqueous solution of the test item (0.10 %) was reported to be 5.3.