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EC number: 269-944-0 | CAS number: 68391-32-2
Endpoint summary
Administrative data
Description of key information
Biodegradation in water
Estimation Programs Interface Suite (EPI suite, 2017) was run to predict the biodegradation potential of the test compound (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride (CAS no. 68391 -32 -2) 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 (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride is expected to be not readily biodegradable.
Biodegradation in water and sediment
Estimation Programs Interface (EPI) Suite (2017) prediction model was run to predict the half-life in water and sediment for the test compound (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride (CAS No. 68391 -32 -2). If released in to the environment, 4.75% of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride in water is estimated to be 60 days (1440 hrs). The half-life (60 days estimated by EPI suite) indicates that the chemical is persistent in water and the exposure risk to aquatic animals is moderate to high whereas the half-life period of (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride in sediment is estimated to be 541.666 days (13000 hrs). Based on this half-life value (541.666 days), it indicates that the chemical (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride is persistent in sediment.
Biodegradation in soil
The half-life period of (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride (CAS No. 68391 -32 -2) in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2017). If released into the environment, 65.9% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride in soil is estimated to be 120 days (416 hrs). Based on this half-life value of (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride, 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
Estimation Programs Interface Suite (EPI suite, 2017) was run to predict the biodegradation potential of the test compound (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride (CAS no. 68391 -32 -2) 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 (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride is expected to be not readily biodegradable.
Biodegradation in water and sediment
Estimation Programs Interface (EPI) Suite (2017) prediction model was run to predict the half-life in water and sediment for the test compound (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride (CAS No. 68391 -32 -2). If released in to the environment, 4.75% of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride in water is estimated to be 60 days (1440 hrs). The half-life (60 days estimated by EPI suite) indicates that the chemical is persistent in water and the exposure risk to aquatic animals is moderate to high whereas the half-life period of (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride in sediment is estimated to be 541.666 days (13000 hrs). Based on this half-life value (541.666 days), it indicates that the chemical (8 -((4 -Amino-3 -nitrophenyl)azo)-7 -hydroxy-2 -naphthyl)trimethylammonium chloride is persistent in sediment.
Biodegradation in soil
The half-life period of (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride (CAS No. 68391 -32 -2) in soil was estimated using Level III Fugacity Model by EPI Suite version 4.1 estimation database (EPI suite, 2017). If released into the environment, 65.9% of the chemical will partition into soil according to the Mackay fugacity model level III. The half-life period of (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride in soil is estimated to be 120 days (416 hrs). Based on this half-life value of (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride, 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.
On the basis of available information, the test substance (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylammonium chloride can be considered to be readily biodegradable in nature.
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