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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-116-1 | CAS number: 7440-06-4
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP, guideline study, available as an unpublished report, reliable without restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 9277:2010(E)
- Qualifier:
- according to guideline
- Guideline:
- other: AA_LP_814_BET_08
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 14488:2007(E)
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13320:2009(E)
- Qualifier:
- according to guideline
- Guideline:
- other: SAA_Troken_DISP, SAA LB2000
- GLP compliance:
- not specified
- Type of method:
- Laser scattering/diffraction
- Remarks:
- following dry dispersion
- Percentile:
- D10
- Mean:
- 55 µm
- Remarks on result:
- other: Range; 53 - 58 µm
- Percentile:
- D50
- Mean:
- 286 µm
- Remarks on result:
- other: Range; 276 - 294 µm
- Percentile:
- D90
- Mean:
- 811 µm
- Remarks on result:
- other: Range; 794 - 841 µm
- Conclusions:
- The average 10th, 50th and 90th percentile particle sizes for platinum were 55, 286 and 811 μm, respectively. The specific surface area was determined as 0.08 ± 0.01 m2/g.
- Executive summary:
This is a non-GLP study but follows standard methods for determining particle size distribution and specific surface area. The study is considered to be suitable for use a key study for this endpoint. The average 10th, 50th and 90th percentile particle sizes for platinum were 55, 286 and 811 μm, respectively. The specific surface area was determined as 0.08 ± 0.01 m2/g.
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP, guideline study, available as an unpublished report, reliable without restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 9277:2010(E)
- Qualifier:
- according to guideline
- Guideline:
- other: AA_LP_814_BET_08
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 14488:2007(E)
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13320:2009(E)
- Qualifier:
- according to guideline
- Guideline:
- other: SAA_Troken_DISP, SAA LB2000
- GLP compliance:
- not specified
- Type of method:
- Laser scattering/diffraction
- Remarks:
- following dry dispersion
- Percentile:
- D10
- Mean:
- 0.064 µm
- Remarks on result:
- other: Range; 0.062 - 0.067 µm
- Percentile:
- D50
- Mean:
- 0.41 µm
- Remarks on result:
- other: Range; 0.41 µm
- Percentile:
- D90
- Mean:
- 1.37 µm
- Remarks on result:
- other: Range; 1.36 - 1.37 µm
- Conclusions:
- The average 10th, 50th and 90th percentile particle sizes for platinum (black) were 0.064, 0.41 and 1.37 μm, respectively. The average specific surface area was determined as 31.0 ± 0.4 m2/g.
- Executive summary:
This is a non-GLP study but follows standard methods for determining particle size distribution and specific surface area. The study is considered to be suitable for use a key study for this endpoint. The average 10th, 50th and 90th percentile particle sizes for platinum (black) were 0.064, 0.41 and 1.37 μm, respectively. The average specific surface area was determined as 31.0 ± 0.4 m2/g.
Referenceopen allclose all
Specific surface area N-BET = 0.08 +/- 0.01 m2/g. Range = 0.090 +/- 0.0004 to 0.078 +/- 0.0008 m2/g.
Table 1: N-BET analysis data and percentiles calculated from the particle size distribution for platinum.
| Analysis 1 | Analysis 2 | Analysis 3 | Average | |
| Specific surface area N-BET (m2/g) | 0.090 ± 0.0004 | 0.078 ± 0.0008 | 0.08 ± 0.01 | |
| X10;3 (μm) | 53 | 57 | 58 | 55 |
| X50;3 (μm) | 276 | 288 | 294 | 286 |
| X90;3 (μm) | 800 | 794 | 841 | 811 |
Mean specific surface area N-BET = 31.0 ± 0.4 m2/g. Range = 30.7 ± 0.1 to 31.3 ± 0.1 m2/g.
Table 1: N-BET analysis data and percentiles calculated from the particle size distribution for platin-mohr
| Analysis 1 | Analysis 2 | Analysis 3 | Average | |
| Specific surface area N-BET (m2/g) | 31.3 ± 0.1 | 30.7 ± 0.1 | 31.0 ± 0.4 | |
| X10;3 (μm) | 0.067 | 0.062 | 0.064 | 0.064 |
| X50;3 (μm) | 0.41 | 0.41 | 0.41 | 0.41 |
| X90;3 (μm) | 1.37 | 1.37 | 1.36 | 1.37 |
Description of key information
The average 10th, 50th and 90th percentile particle sizes for platinum were 55, 286 and 811 μm, respectively. The specific surface area was determined as 0.08 ± 0.01 m2/g. The average 10th, 50th and 90th percentile particle sizes for platinum black (Platin-Mohr) were 0.064, 0.41 and 1.37 μm, respectively. The specific surface area was determined as 31.0 ± 0.4 m2/g.
Additional information
Potthoff (2012) is a non-GLP study but follows standard methods for determining particle size distribution and specific surface area. Both platinum powder and platinum black were tested in the study. This is considered to be suitable for use a key study for this endpoint.
The average 10th, 50th and 90th percentile particle sizes for platinum were 55, 286 and 811 μm, respectively. The specific surface area was determined as 0.08 ± 0.01 m2/g. The average 10th, 50th and 90th percentile particle sizes for platinum black (Platin-Mohr) were 0.064, 0.41 and 1.37 μm, respectively. The specific surface area was determined as 31.0 ± 0.4 m2/g.
The dustiness of Platinum sponge and Platinum black was tested in a modified Heubach procedure according to the guideline DIN 55992-1:2006 (Selck and Parr 2012). The studies are non-GLP, but follow a standard guideline and are considered to be reliable. The total dustiness of Platinum sponge was determined to be 72.65 mg/g. The inhalable fraction was 41.92 mg/g, the thoracic fraction was 3.38 mg/g and the respirable fraction was 0.49 mg/g. The Mass Median Aerodynamic Diameter (MMAD) was determined to be 31.39 μm with a geometric standard deviation of 1.85 μm. The total dustiness of Platinum black was determined to be 205.45 mg/g. The inhalable fraction was 157.25 mg/g, the thoracic fraction was 126.22 mg/g and the respirable fraction was 60.55 mg/g. The Mass Median Aerodynamic Diameter (MMAD) was determined to be 7.4 μm with a geometric standard deviation of 3.2 μm.
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.
