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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Remarks:
pH / acid reserve determination
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2014
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
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Zirconium dinitrate oxide
EC Number:
237-529-3
EC Name:
Zirconium dinitrate oxide
Cas Number:
13826-66-9
Molecular formula:
N2O7Zr
IUPAC Name:
nitric acid; oxozirconium
Details on test material:
No information given on test material.

Reagents

Reagent:
NaOH solution

Titration of acidity and alkalinity

Details on titrant used:
NaOH solution of 1 M

Results and discussion

pH value
Key result
pH value:
1.17
Temp.:
20 °C
Concentration:
10 vol%
Acidity or alkalinity
Key result
Acidity or alkalinity:
acidity
Value:
9.62

Any other information on results incl. tables

Results obtained for the four samples

 

pH

Volume NaOH (mL)

Corrosivity calculation

Test 1

1.173

24.3

0.363

Test 2

1.116

24.1

0.313

Test 3

1.205

23.8

0.412

Test 4

1.182

24

0.382

The pH value was determined to be 1.17 and the acidic reserve was determined to be 9.62. Therefore, the calculation for corrosivity yielded a score of 0.37 (higher than -0.5) and therefore the substance was considered not to be corrosive.

Applicant's summary and conclusion

Conclusions:
The pH value was determined to be 1.17 and the acidic reserve was determined to be 9.62. Therefore, the calculation for corrosivity yielded a score of 0.37 (higher than -0.5) and therefore the substance was considered not to be corrosive.