Registration Dossier
Registration Dossier
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EC number: 235-819-4 | CAS number: 12777-87-6
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 March 2010 - 26 March 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study generated according to internationally accepted testing guidelines.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC Handbook Volume L, 2005; MT 191 Acidity or Alkalinity of Formulations
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Sulphuric acid, compound with graphite
- EC Number:
- 235-819-4
- EC Name:
- Sulphuric acid, compound with graphite
- Cas Number:
- 12777-87-6
- Molecular formula:
- Cm+ HSO4-* n H2SO4
- IUPAC Name:
- sulphuric acid, compound with graphite
- Details on test material:
- ECGA 97914xH (21T9-2)
Constituent 1
Results and discussion
pH value
- pH value:
- 2.01
- Temp.:
- 20 °C
- Concentration:
- 49 g/L
Any other information on results incl. tables
The acidity of Expandable Natural Graphite is recorded in the table below:
Weight | Volume of 0.1 mol/L NaOH solution | Acidity, calculated as H2SO4 | Mean Acidity, calculated as H2SO4 |
5.004 | 18.416 | 1.80 | 1.82 |
4.995 | 18.700 | 1.84 |
Applicant's summary and conclusion
- Conclusions:
- The acidity of Expandable Natural Graphite was determined according to CIPAC MT 191. The mean acidity, calculated as H2SO4, was determined to be 1.82 %, m/m. The corresponding mean pH value was 2.01.
- Executive summary:
The acidity of Expandable Natural Graphite was determined according to CIPAC MT 191. The mean acidity, calculated as H2SO4, was determined to be 1.82 % m/m.
The corresponding mean pH value was 2.01 (the measured pH values were determined to 2.00 and 2.02)
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