Registration Dossier
Registration Dossier
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EC number: 931-322-8 | CAS number: 68131-74-8
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Ash (residues), coal are not harmful to microorganisms and the inhibition of the degradation activity of activated sludge is also not anticipated.
Key value for chemical safety assessment
Additional information
Several activated sludge studies according to OECD 209 are available for a ashes (residues), coal.The NOEC is greater than 100 mg/L (WAF).There are no toxicity in the range of water solubility of ashes (residues), coal and the inhibition of the degradation activity of activated sludge is also not anticipated.
In conclusion, ashes (residues), coal are not toxic to waste water (activated sludge) bacteria at a loading rate of 100 mg/L.
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