Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 936-414-1 | CAS number: -
Nanomaterial aspect ratio / shape
Administrative data
- Endpoint:
- nanomaterial aspect ratio/shape
- Remarks:
- NC7000
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2008-2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study with acceptable restrictions. Original report from test facility was rewritten by sponsor.
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Referenceopen allclose all
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- GLP compliance:
- no
- Type of method:
- scanning electron microscopy
Test material
- Reference substance name:
- carbon
- EC Number:
- 936-414-1
- Molecular formula:
- C
- IUPAC Name:
- carbon
- Test material form:
- solid: nanoform, no surface treatment
- Details on test material:
- - State of aggregation: entangled nanotubes, as described in Section 4.28.1
- Particle size distribution: entangled nanotubes, as described in Section 1.2, 1.4. and 4.28.1.
- Mass median aerodynamic diameter (MMAD): As the product tends to agglomerate this depends on the testing conditions. See Section 4.
- Geometric standard deviation (GSD): Depends on the testing conditions. See Section 4.
- Shape of particles:nanotubes, aspect ratio of ~163:1
- Surface area of particles: 250 - 300 m²/g (BET)
- Crystal structure: graphite.
- Coating: None
- Surface properties: No functionalization intended.
- Density: May vary depending on the batch number. Available information is reported in the Confidential details on test material for each study.
- Moisture content: Not determined. May vary depending on the batch number.
- Residual solvent: Not applicable.
- Activation: Not applicable.
- Stabilisation: Not applicable.
- Other: Not applicable.
Constituent 1
Results and discussion
Shape description
- Key result
- Shape:
- tubular
Aspect ratioopen allclose all
- x Dimension:
- ca. 9.2
- St. dev.:
- 2.7
- y Dimension:
- ca. 1 500
- Remarks on result:
- other: aspect ratio was not assessed during study but calculated
- Remarks:
- µm
- Key result
- x Dimension:
- ca. 1
- y Dimension:
- ca. 163
- Remarks on result:
- other: aspect ration calculated based on several studies
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
