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EC number: 931-322-8 | CAS number: 68131-74-8
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
No reduction of algal growth or yield could be determined up to a loading rate of 100 mg/L for ashes (residues), coal. The tested ashes (residues), coal with a higher content of free lime is harmful to algae (EC50 of 30 mg/L).
Key value for chemical safety assessment
Additional information
Several studies with freshwater algae are available for different types of ashes (residues), coal. The most sensitive results are identified from a study with the ashes (residues), coal with a higher content of free lime. The GLP study according to OECD 201 showed a NOEL of 4.6 mg/L loading rate and a EL50 of 30 mg/L.
In further GLP studies according to OECD TG 201 toxicity of five different ashes (residues), coal to the freshwater algae Pseudokirchneriella subcapitata were tested (Migchielsen, 2010). Under static test conditions algae were exposed to a series of water accommodated fractions up to a loading rate of 100 mg/L. Algal growth was assessed by spectrophotometric measurements at 24 h intervals. No reduction of algal growth or inhibition of yield compared to the control could be observed during an exposure period of 72 h. The EL50 could not be determined as it was greater than the range tested, exceeding a loading rate of 100 mg/L. NOEL for all ashes (residues), coal equaled a loading rate of 100 mg/L. Based on these findings it can be concluded that the tested ashes (residues), coal are not harmful to algae.
Studies by Rejfkova (2008, 2009) and Nachtigallová (2009) on ashes (residues), coal confirm the findings of Migchielsen (2010). Both authors conducted limit tests under GLP according to OECD TG 201. After 72 hours no reduction in growth rate of Desmodesmus subspicatus could be observed. The EL50s were beyond 100 mg/L and NOELs equaled 100 mg/L.
Leachates corresponding to a loading rate of 100 g/L only showed effects on algal growth far greater than 100 mg/L (van Eijk, 2008; Vazelle, 1993).
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