Registration Dossier
Registration Dossier
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EC number: 242-355-6 | CAS number: 18472-87-2
Endpoint summary
Administrative data
Description of key information
Biodegradation
Biodegradation in water: screening tests
The test item 3,4,5,6-tetrachloro-2-(1,4,5,8-tetrabromo-6-hydroxy-3-oxoxanthen-9-yl)benzoic acid (CAS No.18472-87-2) undergoes 74.07% biodegradation after 28 days in the test condition. Thus, the test item can be inferred/considered as readily biodegradable.
Biodegradation in water and sediment: simulation tests
In accordance with column 2 of Annex IX of the REACH regulation, testing for this end point is scientifically not necessary and does not need to be conducted because the substance is readily biodegradable in water.
Biodegradation in soil
In accordance with column 2 of Annex IX of the REACH regulation, testing for this end point is scientifically not necessary and does not need to be conducted because the substance is readily biodegradable in water.
Additional information
Biodegradation
Biodegradation in water: screening tests
28-days Closed Bottle test following the OECD guideline 301D to determine the ready biodegradability of the test item 3,4,5,6 -tetrachloro-2 -(1,4,5,8 -tetrabromo-6 -hydroxy-3 -oxoxanthen-9 -yl)benzoic acid (CAS No.18472 -87 -2). The test system included control, test item and reference item. The concentration of test and reference item (Sodium Benzoate) chosen for the study was 32mg/l and 32mg/l, while that of inoculum was 32ml/l. ThOD (Theoretical oxygen demand) of test and reference item was determined by calculation. % Degradation was calculated using the values of BOD and ThOD for test item and reference item. The BOD28value of3,4,5,6 -tetrachloro-2 -(1,4,5,8 -tetrabromo-6 -hydroxy-3 -oxoxanthen-9 -yl)benzoic acid (CAS No.18472 -87 -2) was observed to be 0.5mgO2/mg. ThOD was calculated as 0.675mgO2/mg. Accordingly, the % degradation of the test item after 28 days of incubation at 20 ± 1°C according to Closed Bottle test was found to be 74.07%. Based on the results, the test item, under the test conditions, was found to be readily biodegradable at 20 ± 1°C over a period of 28 days.
Biodegradation in water and sediment: simulation tests
In accordance with column 2 of Annex IX of the REACH regulation, testing for this end point is scientifically not necessary and does not need to be conducted because the substance is readily biodegradable in water.
Biodegradation in soil
In accordance with column 2 of Annex IX of the REACH regulation, testing for this end point is scientifically not necessary and does not need to be conducted because the substance is readily biodegradable in water.
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