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EC number: 202-548-8
CAS number: 96-97-9
Half life period of 5-nitrosalicylic acid in water is observed to be 15 days (360 hrs.) while in sediment it is 140 days (3360 hrs).Based on these half life values of 5-nitrosalicylic acid, 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 as evident from the reported data (0% in sediment) and hence persistence in the sediment compartment is not likely to be critical.
Based on the Level III Fugacity Model, the
half life period of the 5-nitrosalicylic acid was estimated. The half
period of 5-nitrosalicylic acid in water is 15 days (360 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 140 days (3360 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 5-nitrosalicylic acid does
not diffuse in the sediment medium since it's percentage in the sediment
medium is reported to be 0% and hence persistence in the sediment
compartment is not likely to be critical.
Percent inEach Medium
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