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EC number: 213-074-6 | CAS number: 922-32-7
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 - 19 May 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Version / remarks:
- 1981
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
- Version / remarks:
- 1996
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Phosphocreatine, sodium salt
- EC Number:
- 213-074-6
- EC Name:
- Phosphocreatine, sodium salt
- Cas Number:
- 922-32-7
- Molecular formula:
- C4H8N3O5P.2Na
- IUPAC Name:
- sodium [carbamimidoyl(methyl)amino](phosphono)acetate
- Reference substance name:
- Water
- EC Number:
- 231-791-2
- EC Name:
- Water
- Cas Number:
- 7732-18-5
- Molecular formula:
- H2O
- IUPAC Name:
- Oxidane
- Test material form:
- solid: crystalline
- Details on test material:
- Batch No: 1413900
Constituent 1
impurity 1
- Specific details on test material used for the study:
- Since the test item contains larger particles, it was sieved through a 2000 µm sieve before the measurement. The coarse fraction was 67.5 wt.-% and the fine fraction 32.5 wt.-%.
Results and discussion
Particle sizeopen allclose all
- Key result
- Percentile:
- D10
- Mean:
- 7.4 µm
- St. dev.:
- 0.16
- Remarks on result:
- other: Average result calculated from the results of two test series
- Key result
- Percentile:
- D50
- Mean:
- 48.9 µm
- St. dev.:
- 2.13
- Remarks on result:
- other: Average result calculated from the results of two test series
- Key result
- Percentile:
- D90
- Mean:
- 307.6 µm
- St. dev.:
- 11.68
- Remarks on result:
- other: Average result calculated from the results of two test series
Any other information on results incl. tables
Visual Microscope Analysis
(1) under a microscope with 5x magnification bigger particles can be observed
(2) under a microscope with 20x magnification bigger particles can be observed
(3) under a microscope with 50x magnification, the test item consists of bulky large and small spherical particles
Particle Size Distribution
The test item has a coarse fraction > 2000 µm of 67.5 wt.-%.
The results in the table key results as as well as in the tables below refer to the fine fraction.
Test series 1:
| Percentile | Particle size (µm) | Standard deviation |
| D10 | 7.3 | 0.19 |
| D50 | 47.4 | 2.02 |
| D90 | 295.9 | 15.91 |
Test series 2:
| Percentile | Particle size (µm) | Standard deviation |
| D10 | 7.6 | 0.11 |
| D50 | 50.4 | 0.86 |
| D90 | 319.2 | 19.71 |
Applicant's summary and conclusion
- Conclusions:
- The test item Phosphocreatine, sodium salt (CAS 922-32-7) has a coarse fraction > 2000 µm of 67.5 wt.-%. The fine fraction has a median particle size D50 = 48.9 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981), ISO 13320 (2009) and EPA OCSPP Guideline OPPTS 830.7520 (1996).
- Executive summary:
The test item Phosphocreatine, sodium salt (CAS 922-32-7) has a coarse fraction > 2000 µm of 67.5 wt.-%. The fine fraction has a median particle size D50= 48.9 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981), ISO 13320 (2009) and EPA OCSPP Guideline OPPTS 830.7520 (1996).
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