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Administrative data

Link to relevant study record(s)

Description of key information

Based on level III fugacity model the half life period of phthalylsulfathiazole was estimated.Half life period of phthalylsulfathiazole in water was estimated to be 38 days while in sediment it is 340 days.Based on these half life values it is concluded that phthalylsulfathiazole is readily biodegradable in water where as it is non biodegradable in sediment.

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

Considering level III fugacity model the half life period of phthalylsulfathiazole was estimated. Half life period of phthalylsulfathiazole in water was estimated to be 38 days while in sediment it is 340 days. Based on these half life values it is concluded that phthalylsulfathiazole 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.

 

Media

Half life

(days)

Percent in Medium

Water

38

19%

sediment

340

0%