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Administrative data

Link to relevant study record(s)

Description of key information

Half life period of (3-aminophenyl)uronium chloride  in water is observed to be 38 days (912 hrs.) while in sediment it is 340 days (8160 hrs).Based on these half life values of (3-aminophenyl)uronium chloride , it is concluded that the chemical is readily biodegradable in water where as it is non biodegradable in sediment. However, since there is no diffusion of the substance in the sediment hence persistence in the sediment compartment is not likely to be critical

Key value for chemical safety assessment

Half-life in water:
38 d
at the temperature of:
25 °C
Half-life in sediment:
340 d
at the temperature of:
25 °C

Additional information

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%