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EC number: 237-529-3 | CAS number: 13826-66-9
pH
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:
- 2 014
- 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
- 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.
Constituent 1
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.
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