Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Biodegradation in Water and Sediment :

Based on the Level III Fugacity Model, the half life period of the (3-aminophenyl)uronium chloride was estimated. The half period of (3-aminophenyl)uronium chloride in water is 38 days (912 hrs) therefore it is considered that the substance will qualify as not persistent as the half life does not exceed the EPA criteria of 60 days. So, it can be confirmed that the substance is readily biodegradable in water medium where as in sediment the half life is 340 days (8160 hrs).

Based on this value, it can be inferred that the substance is persistent in sediment medium and is not readily biodegradable probably due to the anaerobic conditions existing in most sediments. However, it can be observed that (3-aminophenyl)uronium chloride have no diffusion in the sediment medium hence persistence in the sediment compartment is not likely to be critical.

Media

 

Half-Life 
(days)

 

Percent in
Each Medium

 

Water

38

46%

Sediment

340

0%

Biodegradation in soil :

The PBT Profiler & EPI Suite has estimated that (3-aminophenyl)uronium chloride is expected to be found predominantly in soil and its persistence estimate is based on its transformation in this medium. Its half-life in soil, 75 days (1800 hrs). This exceeds the threshold of >= 2 months (and <= 6 months). Therefore, (3-aminophenyl)uronium chloride is estimated to be persistent in the soil environment.

PBT profiler :

Media

 

Half-Life 
(days)

 

Percent in
Each Medium

 

Soil

75

54%

EPI Suite :

Mass Amount (percent)

Half-Life (hr)

Emissions (kg/hr)

Soil

69.8

1.8e+003

1000

 

Fugacity (atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

Soil

9.37e-017

1e+003

0

33.5

0