Registration Dossier
Registration Dossier
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EC number: 204-409-7 | CAS number: 120-57-0
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance has been shown to be readily degradable in manometric respirometry test.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Ready biodegradability was tested according to the manometric repirometry test (OECD 301 F, 1192) and in compliance with GLP. Nominal initial test substance concentration was 100 mg/L. The test was performed with inoculum prepared by taking two 50 ml samples of the homogenised sludge, evaporating water on a steam bath, drying in an oven at 105- 110 °C for two hours and weighing the residue. The test substance at 100 mg/L achieved mean degradations of 77% by day 7, and 82% by the end of the study. The viability of the inoculum and validity of the test were supported by the results of the reference substance, sodium benzoate, which degradation approximately exceeds 40 % after 7 days and 65 % after 14 days.
The day-7 results clearly show that the 10-day window criterion was met. The substance is considered to be readily biodegradable under the conditions of the test.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.
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