Registration Dossier
Registration Dossier
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EC number: 201-344-6 | CAS number: 81-33-4
Nanomaterial aspect ratio / shape
Administrative data
- Endpoint:
- nanomaterial aspect ratio/shape
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2021
- 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:
- other: unpublished study report
- Title:
- Unnamed
- Year:
- 2 021
- Report date:
- 2021
Materials and methods
- Principles of method if other than guideline:
- - 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.
- The number-based particle size distribution was analyzed using the automated ImageJ NanoDefine ParticleSizer software.
Test material
- Reference substance name:
- Perylene-3,4:9,10-tetracarboxydiimide
- EC Number:
- 201-344-6
- EC Name:
- Perylene-3,4:9,10-tetracarboxydiimide
- Cas Number:
- 81-33-4
- Molecular formula:
- C24H10N2O4
- IUPAC Name:
- 7,18-diazaheptacyclo[14.6.2.2²,⁵.0³,¹².0⁴,⁹.0¹³,²³.0²⁰,²⁴]hexacosa-1(23),2,4,9,11,13,15,20(24),21,25-decaene-6,8,17,19-tetrone
- Test material form:
- solid: nanoform
- Details on test material:
- - Name of test material (as cited in study report): Paliogen Rotviolett K5411
- Analytical purity: >98%
- Lot/batch No.: LDPH0113
Constituent 1
Data gathering
- Instruments:
- TEM: Zeiss Libra 120 kV
- Calibration:
- no data
- Reproducibility:
- no data
Results and discussion
Shape description
- Key result
- Shape:
- spherical
- Remarks on result:
- other: The material is assigned to the “spheroidal” shape category
Aspect ratio
- Key result
- x Dimension:
- 1.6
- St. dev.:
- 0.5
- y Dimension:
- 1
- Remarks on result:
- other: median (D50)
Any other information on results incl. tables
The number-based concentration of particles with sizes below 100 nm (smallest
feret diameter) is 100%. The median (D50) of the particle size is 33,8 nm.
The material is therefore classified as “nano” according to the definition of nanomaterial 2011/696/EU.
Applicant's summary and conclusion
- Conclusions:
- - The particles have a median aspect ratio of 1,6:1.
- The shape is “spherical”. The material is assigned to the “spheroidal” shape category.
- The number-based concentration of particles with sizes below 100 nm (smallest feret diameter) is 100%. The median (D50) of the particle size is 33,8 nm.
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