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EC number: 600-734-7 | CAS number: 106276-78-2
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:
- other: unpublished study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
- Principles of method if other than guideline:
- Method selection according to Gaillard et al., Nanoscale Adv., 2019, 1, 781
- GLP compliance:
- no
- Type of method:
- transmission electron microscopy
- Details on methods and data evaluation:
- TEM image evaluation according to Verleysen et al., Materials 2019, 12, 2274; doi:10.3390/ma12142274
Sample preparation: Dispersion in ethanol; transfer to carbon-coated TEM-grids.
Test material
- Reference substance name:
- (3Z)-4,5,6,7-tetrachloro-3-({3-methyl-4-[(1E)-2-(3-methylphenyl)diazen-1-yl]phenyl}imino)-2,3-dihydro-1H-isoindol-1-one; 4,5,6,7-tetrachloro-3-({3-methyl-4-[(1E)-2-{4-[(4,5,6,7-tetrachloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]phenyl}amino)-1H-isoindol-1-one; 6-acetyl-3-({4-[(1E)-2-{4-[(6-acetyl-4,5,7-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,7-trichloro-1H-isoindol-1-one; 6-acetyl-3-({4-[(1E)-2-{4-[(7-acetyl-4,5,6-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,7-trichloro-1H-isoindol-1-one; 7-acetyl-3-({4-[(1E)-2-{4-[(6-acetyl-4,5,7-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,6-trichloro-1H-isoindol-1-one; 7-acetyl-3-({4-[(1E)-2-{4-[(7-acetyl-4,5,6-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,6-trichloro-1H-isoindol-1-one; N-{4-[(1E)-2-(2-methyl-4-{[(1Z)-4,5,6,7-tetrachloro-3-oxo-2,3-dihydro-1H-isoindol-1-ylidene]amino}phenyl)diazen-1-yl]phenyl}acetamide
- EC Number:
- 600-734-7
- Cas Number:
- 106276-78-2
- Molecular formula:
- C13H14N.C9H3Cl4NO2.CH4O.Na
- IUPAC Name:
- (3Z)-4,5,6,7-tetrachloro-3-({3-methyl-4-[(1E)-2-(3-methylphenyl)diazen-1-yl]phenyl}imino)-2,3-dihydro-1H-isoindol-1-one; 4,5,6,7-tetrachloro-3-({3-methyl-4-[(1E)-2-{4-[(4,5,6,7-tetrachloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]phenyl}amino)-1H-isoindol-1-one; 6-acetyl-3-({4-[(1E)-2-{4-[(6-acetyl-4,5,7-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,7-trichloro-1H-isoindol-1-one; 6-acetyl-3-({4-[(1E)-2-{4-[(7-acetyl-4,5,6-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,7-trichloro-1H-isoindol-1-one; 7-acetyl-3-({4-[(1E)-2-{4-[(6-acetyl-4,5,7-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,6-trichloro-1H-isoindol-1-one; 7-acetyl-3-({4-[(1E)-2-{4-[(7-acetyl-4,5,6-trichloro-1-oxo-1H-isoindol-3-yl)amino]phenyl}diazen-1-yl]-3-methylphenyl}amino)-4,5,6-trichloro-1H-isoindol-1-one; N-{4-[(1E)-2-(2-methyl-4-{[(1Z)-4,5,6,7-tetrachloro-3-oxo-2,3-dihydro-1H-isoindol-1-ylidene]amino}phenyl)diazen-1-yl]phenyl}acetamide
- Test material form:
- solid: nanoform
1
Data gathering
- Instruments:
- Zeiss Libra 120kV
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:
- 1.5
- St. dev.:
- 0.5
- y Dimension:
- 1
- Remarks on result:
- other: median (D50)
Applicant's summary and conclusion
- Conclusions:
- - The particles have a median aspect ratio of 1,5:1.
- 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 ferret diameter) is 70%. The median (D50) of the particle size is73,5 nm.
The material is therefore classified as “nano” according to the definition of nanomaterial 2011/696/EU.
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