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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 205-027-3 | CAS number: 131-54-4
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018-04-26 (experimental phase)
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
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:
- OECD Guideline 110 (1981): Particle size distribution
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- aggregate
Test material
- Reference substance name:
- 2,2'-dihydroxy-4,4'-dimethoxybenzophenone
- EC Number:
- 205-027-3
- EC Name:
- 2,2'-dihydroxy-4,4'-dimethoxybenzophenone
- Cas Number:
- 131-54-4
- Molecular formula:
- C15H14O5
- IUPAC Name:
- 2-(2-hydroxy-4-methoxybenzoyl)-5-methoxyphenol
- Test material form:
- solid: particulate/powder
- Remarks:
- Light yellow crystalline powder
Constituent 1
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D10
- Mean:
- 2.2 µm
- St. dev.:
- 0.08
- Key result
- Percentile:
- D50
- Mean:
- 9.8 µm
- St. dev.:
- 0.2
- Percentile:
- D90
- Mean:
- 24.4 µm
- St. dev.:
- 0.3
Applicant's summary and conclusion
- Conclusions:
- The test item 2,2’-Dihydroxy-4,4’-Dimethoxybenzophenone has a median particle size of D50 = 10 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981) and ISO 13320 (2009).
- Executive summary:
The test item 2,2’-Dihydroxy-4,4’-Dimethoxybenzophenone has a median particle size of D50 = 10 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981) and ISO 13320 (2009).
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.
