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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 soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
The most sensitive NOEC of ashes (residues), coal is 32 g/kg soil d. w.
Key value for chemical safety assessment
Additional information
On behalf of the VGB PowerTech e. V. the toxicity of ashes (residues), coal to earthworm was assessed by Roembke (2008) according to the ISO guideline 11268-1 (Effects of Pollutants on Earthworms. 1, Determination of Acute Toxicity Using Artificial Soil Substrate, 1997). Different ashes (residues), coal types originated from combustion of hard coal or lignite with and without co-combustion, respectively, were tested.
During an exposure period of 14 days the earthworm species Eisenia fetida was exposed to different concentrations of ashes (residues), coal in soil, ranging from an ash to soil ratio of 1/32 (3.1% ash, 96.9% soil) up to a substrate consisting only of ash (100% ash). The test was conducted in covered glass vessels containing 500 g of substrate and 10 adult earthworms per concentration. After 7 days as well as at the end of the experiment on day 14 the number of earthworms alive and their weight was determined.
The most sensitive study is the one performed with a ashes (residues), coal with a higher content of free lime (FA 6). Under the conditions of this study no mortality was observed at a test substance concentration of 32 g/kg soil d. w. (NOEC). Meanwhile at a concentration of 67 g/kg soil d. w. all animals were dead after an exposure period of 14 days. LC50 was not calculated but must be between 32 and 67 g/kg soil d. w. Other studies with ashes (residues), coal with a higher content of free lime revealed EC50 values between 66 and greater than 1000 g/kg.
In general ashes (residues), coal without a higher content of free lime only caused mortality in earthworms at very high test concentrations. At concentrations up to 143 g ash/kg soil no mortality was observed. The most critical ash was found to be a fly ash originated from combustion of hard coal and secondary fuels (FA5). At a concentration of 333 g/kg of this ash (FA5) 95% of the earthworms were dead at the end of the test. Other ashes (residues), coal - fly ashes showed 100% mortality at the significant higher concentration of 1000 g/kg (FA1, FA2, FA3). In general bottom ashes seemed to be less toxic than ashes (residues), coal - fly ashes. Both bottom ashes tested (KS1 and KS2) caused no or only very low mortality at a concentration of 1000 g/kg.
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