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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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