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Diss Factsheets
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EC number: 233-660-5 | CAS number: 10294-40-3
- 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
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.005 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.005 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.005 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 31 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 31 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 3.2 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 17 000 g/kg food
- Assessment factor:
- 10
Additional information
Since the background concentration in the ecotoxicological test media is negligible, the PNEC total and the PNEC added are considered to be equal.
BaCrO4 is a salt and will release Ba or Cr ions (transformation products via hydrolysis, dissociation,…). These ions will be responsible for any potential environmental and human systemic effect, rather than the initial non-transformed substance.
Barium and chromium are both natural elements, natural part of the earth’s crust and present in natural background concentrations in all environmental compartments.
Due to several physico-chemical processes, chromium can exist in different chemical forms, some of which are more bioavailable and toxic than others (depending on pH, hardness and dissolved organic matter, for instance). In particular, a significant difference may exist between Cr(VI) and Cr(III), which are the most stable oxidation states of chromium at pH range of natural waters. Once Cr (VI) is released in the environment, reduction will occur. Cr(VI) can be removed naturally in water by reductants such as aqueous Fe(II), dissolved humic acids, and Fe(II)-bearing minerals and Cr(III) will be formed. Cr (VI) in the air reacts with dust particles or other pollutants to form Cr(III). The environmental effects assessment is therefore based on the Cr(III) assessment.
As widely reported in relevant chromate assessments (i.e. RAR 2005, INERIS 2005), in aquatic environment, adsorption of Cr(VI) to particulate matter decreases when pH increases and competing dissolved anions are present. On the other hand, Cr(III) adsorption increases with pH and decreases where competing dissolved cations are present. Under the same conditions, Cr(III) adsorption to particulate matter is higher than Cr(VI). In sediment, reduction of Cr(VI) to Cr(III) is expected in anaerobic sediments: at environmental pH, adsorption of Cr(III) to sediment is likely to occur and when pH decreases below 5, Cr(III) becomes more mobile.
The behaviour of Cr(VI) in soil is similar to its behaviour in sediment compartment. Adsorption to the soil matrix is expected to increase with increasing acidity of the soil. Under neutral to alkaline conditions Cr(VI) is expected to become highly mobile in soil. Furthermore, it may leach into anaerobic layers where reduction to Cr(III) would be expected. As for sediment, Cr(III) is expected to be rapidly and strongly adsorbed into soil. In groundwater, Cr(VI) is reduced to Cr(III) in presence of low oxygen concentration or reducing conditions.
For human health, it can not be assumed that Cr (VI) is rapidly reduced to the less toxic Cr (III) and consequently, Cr (VI) is assumed for human health
Conclusion on classification
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.