Registration Dossier
Registration Dossier
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EC number: 225-935-3 | CAS number: 5160-02-1
Nanomaterial aspect ratio / shape
Administrative data
- Endpoint:
- nanomaterial aspect ratio/shape
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2019
- 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:
- 2 019
- Report date:
- 2019
Materials and methods
- Principles of method if other than guideline:
- Guidelines from NanoDefine are applied:
Method selection according to Gaillard et al., Nanoscale Adv., 2019, 1, 781
TEM image evaluation according to Verleysen et al., Materials 2019, 12, 2274; doi:10.3390/ma12142274 - GLP compliance:
- no
- Type of method:
- transmission electron microscopy
- Details on methods and data evaluation:
- Sample Preparation:
A suspension in ethanol was dispersed between two object slides and applied on a TEM grid
Test material
- Reference substance name:
- Barium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]toluene-4-sulphonate]
- EC Number:
- 225-935-3
- EC Name:
- Barium bis[2-chloro-5-[(2-hydroxy-1-naphthyl)azo]toluene-4-sulphonate]
- Cas Number:
- 5160-02-1
- Molecular formula:
- C17H13ClN2O4S.1/2Ba
- IUPAC Name:
- barium(2+) bis(5-chloro-2-[(1E)-2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]-4-methylbenzene-1-sulfonate)
- Test material form:
- solid: nanoform
Constituent 1
Data gathering
- Instruments:
- TEM: Thermo-Fisher Talos F200i 200kV
- Calibration:
- every 12 months with Mag*i*Cal sample
- Reproducibility:
- systematic error +/-3%
Results and discussion
Shape description
- Key result
- Shape:
- other: mixtures of particles with different shapes
- Remarks on result:
- other: The material is assigned to the “MULTIMODAL” shape category.
Aspect ratio
- Key result
- Remarks on result:
- other: D50= 2,2:1
Applicant's summary and conclusion
- Conclusions:
- The material is assigned to the “MULTIMODAL” shape category and the particles have a median aspect ratio of 2,2:1.
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