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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Environmental fate & pathways

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Administrative data

Description of key information

Biodegradation in water

Estimation Programs Interface Suite was run to predict the biodegradation potential of the test chemical in the presence of mixed populations of environmental microorganisms. The biodegradability of the substance was calculated using seven different models such as Linear Model, Non-Linear Model, Ultimate Biodegradation Timeframe, Primary Biodegradation Timeframe, MITI Linear Model, MITI Non-Linear Model and Anaerobic Model (called as Biowin 1-7, respectively) of the BIOWIN v4.10 software. The results indicate that test chemical was expected to be not readily biodegradable.

Biodegradation in water and sediment

Estimation Programs Interface prediction model was run to predict the half-life in water and sediment for the test chemical. If released in to the environment, 21.8 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of test chemical in water was estimated to be 37.5 days (900 hrs). The half-life (37.5 days estimated by EPI suite) indicates that the chemical was not persistent in water and the exposure risk to aquatic animals is moderate to low whereas the half-life period of test chemical in sediment is estimated to be 337.5 days (8100 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.175%), indicates that the test chemical was not persistent in sediment.

 

 

Biodegradation in soil

The half-life period of test chemical in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database. If released into the environment, 78% of the test chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of test chemical in soil was estimated to be 75 days (1800 hrs). Based on this half-life value of test chemical, it is concluded that the chemical is not persistent in the soil environment and the exposure risk to soil dwelling animals is moderate to low.

Additional information

Biodegradation in water

Various predicted and experimental studies of the test chemical and supporting its structurally and functionally similar read across substances were reviewed for the biodegradation end point which are summarized as below:

Estimation Programs Interface Suite was run to predict the biodegradation potential of the test chemical in the presence of mixed populations of environmental microorganisms. The biodegradability of the substance was calculated using seven different models such as Linear Model, Non-Linear Model, Ultimate Biodegradation Timeframe, Primary Biodegradation Timeframe, MITI Linear Model, MITI Non-Linear Model and Anaerobic Model (called as Biowin 1-7, respectively) of the BIOWIN v4.10 software. The results indicate that test chemical was expected to be not readily biodegradable.

 

Biodegradation study was conducted for 28 days for evaluating the percentage biodegradability of test chemical. Activated sludge was used as a test inoculum for the study. Concentration of inoculum i.e, sludge used was 30 mg/l and initial test substance concentration used in the study was 100 mg/l, respectively. The percentage degradation of test chemical was determined to be 2% by BOD, TOC removal and HPLC parameter in 28 days. Thus, based on percentage degradation by various parameters, test chemical was considered to be not readily biodegradable in nature.

 

Biodegradation study was conducted for 28 days for evaluating the percentage biodegradability of test chemical. The study was performed according to OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test). Activated sludge was used as a test inoculum for the study. Concentration of inoculum i.e, sludge used was 30 mg/l and initial test substance concentration used in the study was 100 mg/l, respectively. The percentage degradation of test chemical was determined to be 0, 6 and 1% by BOD, TOC removal and HPLC parameter in 28 days. Thus, based on percentage degradation, test chemical was considered to be not readily biodegradable in nature.

Based on above results for test chemical, it can be concluded that the test chemical can be expected to be not readily biodegradable in nature.

Biodegradation in water and sediment

Estimation Programs Interface prediction model was run to predict the half-life in water and sediment for the test chemical. If released into the environment, 21.8 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of test chemical in water was estimated to be 37.5 days (900 hrs). The half-life (37.5 days estimated by EPI suite) indicates that the chemical was not persistent in water and the exposure risk to aquatic animals is moderate to low whereas the half-life period of test chemical in sediment is estimated to be 337.5 days (8100 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.175%), indicates that the test chemical was not persistent in sediment.

 

Biodegradation in soil

The half-life period of test chemical in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database. If released into the environment, 78% of the test chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of test chemical in soil was estimated to be 75 days (1800 hrs). Based on this half-life value of test chemical, it is concluded that the chemical is not persistent in the soil environment and the exposure risk to soil dwelling animals is moderate to low.