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EC number: 215-218-3 | CAS number: 1314-08-5
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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: GLP complaint, guideline study, available as unpublished report acceptable without restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Version / remarks:
- Screening Test
- Principles of method if other than guideline:
- The method used is based on a procedure designed to comply with that given in 'Particle size distribution, fibre length and diameter distribution', June 1996 European Commission technical guidance document, which satisfies the requirements of OECD Guideline 110
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- No.:
- #1
- Size:
- < 100 µm
- Distribution:
- 99.1 %
- Conclusions:
- In an OECD 110 Granulometry (Screening Test) the proportion of Palladium monoxide( anhydrous solid) <100 μm was 99.1 %
- Executive summary:
This is a GLP compliant, guideline study considered suitable for use as the key study for this endpoint. The proportion of Palladium monoxide (anhydrous solid) < 100 μm is 99.1 %
Reference
The results of the sieving procedure are shown below:
Measurement |
Result |
Mass of test item transferred to sieve |
10.03g |
Mass of test item passed through sieve |
9.94g |
Proportion of test item <100µm |
99.1% |
Description of key information
Particle size distribution was determined for palladium monoxide (anhydrous). For palladium monoxide, 50% of particles were < 36.08 µm.
Additional information
The particle size distribution of palladium monoxide was measured using Microtrac X-100 as part of a transformation / dissolution study (Skeaff and Beaudoin 2011). The results are considered to be suitable for use for this endpoint. The particle size distribution of palladium monoxide powder was determined and showed 50% of particles <36.08 µm.
Specific surface area was determined using a Micromeretics Flowsorb II BET gas adsorption desorption technique. Specific surface area for palladium monoxide powder was determined to be 0.278 m2/g (calculated from particle size) and 0.31 m2/g (measured by BET).
A screening assessment of particle size was conducted for a sample of anhydrous palladium monoxide in a GLP compliant, guideline study (Tremain and Atwal 2011). The proportion of Palladium monoxide (anhydrous solid) < 100 μm is 99.1 %.
The dustiness of palladium monoxide anhydrous was tested in a modified Heubach procedure according to the guideline DIN 55992-1:2006 (Selck and Parr 2012). The study is non-GLP, but follows a standard guideline and is considered to be reliable. The total dustiness of palladium monoxide anhydrous was determined to be 566.83 mg/g. The inhalable fraction was 335.63 mg/g, the thoracic fraction was 44.27 mg/g and the respirable fraction was 6.30 mg/g. The Mass Median Aerodynamic Diameter (MMAD) was determined to be 29.8 μm with a geometric standard deviation of 1.9 μm.
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