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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 263-778-2 | CAS number: 62973-79-9
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 Oct 2017 to 16 Oct 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Principles of method if other than guideline:
- Principle
The particle size distribution of different pigment sample dispersions was analysed by use of laser diffraction.
Method
- The Sympatec “SUCELL” automated closed loop wet dispersing unit is filled with fresh demineralized water and circulated by a peristaltic pump through a stainless steel flowthrough cuvette back into the water basin.
- The pigment sample is dosed into the “SUCELL” water basin and the dispersion is circulated until a stable readout of about 15% optical density is obtained
- The laser diffraction analysis is started and after completion the sample compartment water basin is emptied, thoroughly cleaned and refilled with fresh demineralized water for the next measurement.
Apparatus
- Sympatec Helos/BF (H1906) laser diffraction apparatus equipped with a “SUCELL” digital dispenser (ID 204, stainless steel flow-through cuvette Küv. 6015 with path length of 2mm) and Windox software version 5.9.00 (see Appendix for illustrations)
- Ultrapure water obtained from a water purification system from Millipore, Model Milli-Q Integral 15, S/N F9NN37849B with Q-POD remote dispenser S/N F9MN26892P - GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- other: bulk material
- Type of distribution:
- volumetric distribution
- Specific details on test material used for the study:
- Product code: 278PE
Batch number: 170903 - Key result
- Percentile:
- D10
- Mean:
- 8.81 µm
- St. dev.:
- 0
- Remarks on result:
- other:
- Remarks:
- Standard deviation not stated therefore entered as zero
- Key result
- Percentile:
- D50
- Mean:
- 69.99 µm
- St. dev.:
- 0
- Remarks on result:
- other:
- Remarks:
- Standard deviation not stated therefore entered as zero
- Key result
- Percentile:
- D90
- Mean:
- 240.31 µm
- St. dev.:
- 0
- Remarks on result:
- other:
- Remarks:
- Standard deviation not stated therefore entered as zero
- Conclusions:
- 10% of the particles are below 8.81 μm, 50% of the particles are below 69.99 μm and 90% of the particles are below 240.31 μm.
Reference
Description of key information
D10 = 8.81 µm
D50 = 69.99 µm
D90 = 240.31 µm
Additional information
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.
