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EC number: 276-344-2 | CAS number: 72102-84-2
Nanomaterial specific surface area
Administrative data
- Endpoint:
- nanomaterial specific surface area
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2013
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
- Principles of method if other than guideline:
- The determination of the specific surface area of substances in powder or in granulate form is according to the Brunauer, Emmet and Teller (BET) principle.
- GLP compliance:
- no
- Type of method:
- BET
- Details on methods and data evaluation:
- Preparing the Instruments
Rinsing: valves 1, 2, 3, and 4 are open (pin has been removed), the blocking valve 5 is locked. Both the adsorption vessels are still on the AREA-Meter. The nitrogen stream is on (20%).
Evaluation
The nomographic evaluation is the most simplified way of calculating specific surface areas.
The specific surface area is calculated using four different parameters.
Test material
- Reference substance name:
- 5-[(2,3-dihydro-6-methyl-2-oxo-1H-benzimidazol-5-yl)azo]barbituric acid
- EC Number:
- 276-344-2
- EC Name:
- 5-[(2,3-dihydro-6-methyl-2-oxo-1H-benzimidazol-5-yl)azo]barbituric acid
- Cas Number:
- 72102-84-2
- Molecular formula:
- C12H10N6O4
- IUPAC Name:
- 5-[(1E)-2-(6-methyl-2-oxo-2,3-dihydro-1H-1,3-benzodiazol-5-yl)diazen-1-yl]-1,3-diazinane-2,4,6-trione
- Test material form:
- solid: nanoform
Constituent 1
Data gathering
- Instruments:
- AREA-Meter II from STRÖHLEIN INSTRUMENTS
Thermostat (300-600K) for 8 Adsorption vessels with rinsing capillaries - Calibration:
- Carbon (coal) Calibration standard 76 m2/g (± 2)
- Reproducibility:
- no data
Results and discussion
Specific surface area
- Key result
- Specific Surface Area:
- 20.8 m²/g
- Remarks on result:
- other: no data on st.dev.
Applicant's summary and conclusion
- Conclusions:
- The SSA of test substance was determined to be 20.8 m²/g.
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