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Diss Factsheets
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EC number: 215-160-9 | CAS number: 1308-38-9
- 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
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: see 'Remarks'
- Remarks:
- No endpoints are reported that can be used for hazard assessment of Cr2O3. However, the study contains valuable information on the speciation and fate of chromium in urban areas with high anthropogenic activities.
Data source
Reference
- Reference Type:
- publication
- Title:
- Speciation and potential long-term behaviour of chromium in urban sediment particulates
- Author:
- Byrne, P. et al.
- Year:
- 2 017
- Bibliographic source:
- J Soils Sediments (2017) 17:2666-2676
Materials and methods
Test guideline
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- The study investigated the speciation and long-term fate of chromium in urban sediment particulates with a focus on the major grain types occurring in aquatic and road dust sediments. Speciation of solid-phase chromium in road dust sediments as well as urban aquatic sediments, which is thought to determine the environmental mobility of chromium, was performed using bulk chemical digests, sequential extractions as well as x-ray absorption spectroscopy.
- GLP compliance:
- no
Test material
- Reference substance name:
- not applicable
- Molecular formula:
- Cr
- IUPAC Name:
- not applicable
- Test material form:
- other: Elemental Cr in the environment
Constituent 1
Results and discussion
Any other information on results incl. tables
Elemental analysis of road dust sediment and aquatic sediment
Cr-bearing grains in road dust sediment were predominantly identified as iron oxide grains, with Cr-bearing silicate glass grains also being present. Mean Cr concentrations in grains derived from road dust sediment were 425 µg Cr/g with maximum concentrations up to 3300 µg/g in these grains. The Cr-bearing grains were further identified Fe oxide, mixed Fe-Al-silicate, Fe-Mg-silicate and Fe-silicate grains.
Aquatic sediment samples were dominated by glass grains with mean Cr concentrations ranging from 226 - 347 µg Cr/g and hotspots (dark inclusions inside Fe-rich glass grains) with a mean Cr concentration of 69800 µg/g. In addition, mean pseudo-total chromium concentrations in glass grains derived from the aquatic sediment samples were determined with 260 µg/g, of which less than 20% was considered bioavailable based on the sequential extraction procedure.
Chromium speciation in road dust sediment and aquatic sediments
Based on qualitative XANES analysis, Cr speciation in both road dust sediments and aquatic sediment samples is dominated by Cr(III), with the fraction of tetrahedrally coordinated Cr(VI) species estimated to be < 5%.
Applicant's summary and conclusion
- Conclusions:
- No endpoints are reported that can be used for hazard assessment of Cr2O3. With its focus only on the >63 µm fraction and microscopic glass grains in the industrial areas of Manchester city, the study is of limited relevance for deriving general fate predictions of chromium substances. However, the study contains valuable information on the speciation of chromium in urban areas with high anthropogenic activities. Cr speciation showed Cr(III) being the dominating species in road dust sediments as well as in the aquatic sediments analysed in this study.
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