Registration Dossier

Administrative data

Endpoint:
acidity / alkalinity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12 June 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Yttrium trinitrate
EC Number:
233-802-6
EC Name:
Yttrium trinitrate
Cas Number:
10361-93-0
Molecular formula:
N3O9Y
IUPAC Name:
yttrium trinitrate
Details on test material:
Yttrium trinitrate, no further information available on test item.

Reagents

Reagent:
NaOH solution

Titration of acidity and alkalinity

Details on titrant used:
NaOH, 1 M

Results and discussion

pH value
Key result
pH value:
1.81
Temp.:
20 °C
Acidity or alkalinity
Key result
Acidity or alkalinity:
acidity
Value:
0.448

Any other information on results incl. tables

The corrosivity value was determined to be 1.773. Since this value is > -0.5, the test substance is not considered to be corrosive.

Applicant's summary and conclusion

Conclusions:
The pH value of a 10% solution of yttrium trinitrate was determined to be 1.81 and the acidic reserve 0.448. The calculated value for corrosivity was 1.773 (> -0.5). Based on these data the substance was considered not to be corrosive.