Registration Dossier
Registration Dossier
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EC number: 271-974-4 | CAS number: 68647-86-9
Endpoint summary
Administrative data
Description of key information
Additional information
Discussion (screening testing)
The test item (charcoal) was tested in a concentration of 25 mg/L. As positive control, aniline was tested in parallel. The biodegradation of the test substance was determined by measuring the emitted CO2concentrations on test days 2, 4, 7, 9, 11, 14, 18, 23, during the 28-day test period and on day 29. The biodegradation for the whole test period was determined as <2%. Hence, charcoal (Probe 2: C-Fix = 80.5%) is considered not readily biodegradable. For the positive control, a degradation of 64% was achieved within 9 d, ensuring the validity of the test.
The following information is taken into account for any hazard / risk / persistency assessment:
The biodegradability of charcoal (Probe 2: C-Fix = 80.5%) was tested according to OECD guideline 301B (CO2evolution test) and under GLP compliance.
Biodegradation in water: under test conditions, no biodegradation was observed.
Discussion (simulation testing)
Simulation testing on ultimate degradation in surface water and sediment simulation testing is not needed, as charcoal, coconut shell is highly insoluble in water (see IUCLID section 4.8).
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