Registration Dossier
Registration Dossier
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EC number: 269-075-7 | CAS number: 68187-15-5 An inorganic pigment that is the reaction product of high temperature calcination in which praseodymium (III) oxide, praseodymium (IV) oxide, silicon oxide, and zirconium (IV) oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of zircon. Its composition may include any one or a combination of the modifiers alkali or alkaline earth halides.
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- density, other
- Remarks:
- density and relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2009-09-15 to 2009-10-01
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Raw test data are missing in report.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Principles of method if other than guideline:
- The true density of the sample was determined using a helium stereopycnometer. The technique is based on the determination of the ture volume that the powder occupies, by means of the difference between the cell volume and the volume that the helium occupies that is introduced to complete the cell filling. True density is calculated ba taking into account the mass of the powder used. The cell used for the density determination was the so-called Large cell, withe a volume of 135cm³.
- GLP compliance:
- not specified
- Type of method:
- air comparison pycnometer (for solids)
- Remarks:
- helium stereopycnometer
- Dynamic viscosity of test material:
- no data - test item is a solid
- Key result
- Type:
- density
- Density:
- 4.47 g/cm³
- Temp.:
- 20 °C
- Remarks on result:
- other: relative density D20/4 = 4.47
- Conclusions:
- The true density is 4.47 +/- 0.02 g/cm³. The relative density D20/4 compared to water at 4 °C is 4.47.
Reference
The true density is 4.47 +/- 0.02 g/cm³. The relative density D204 compared to water at 4 °C is 4.47.
Description of key information
The true density is 4.47 +/- 0.02 g/cm³. The relative density at 20 °C compared to water at 4 °C is 4.47.
Key value for chemical safety assessment
- Relative density at 20C:
- 4.47
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.
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