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Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Available data suggest that PETN would only very slowly go into solution and would be unlikely to transport as parts per million levels to any appreciable extent. The log octanol/water partition coefficient suggests that PETN would not be expected to bioaccumulate in plants or animals to any appreciable extent.

The evaluation of the biodegradation potential of PETN in environmental water and sediment samples suggests that under most environmental conditions, biotic processes are faster in breaking down PETN than the abiotic processes involved in dissolving PETN in water.

Taken together, these data suggest PETN is of relatively minor environmental concern.

Additional information

Taking an estimated Koc value of 650 based on a structure estimation method, pentarythritol tetranitrate is expected to have low mobility in soil.

Henry's constant has also been estimated on 1.3E-09 atm-cu m/mole. This value and a water solubility of 43 mg/l conclude that volatilization of pentaerythritol pentanitrate from moist soil surfaces/ water surfaces is not expected to be an important fate process.

Due to its natural state, solid, its vapour pressure is negligible and therefore pentaerythritol tetranitrate is not expected to volatilize from dry soil surfaces. It is also a nitrogen source for microbial cultures isolated from soil and sewage sludge, suggesting that pentaerythritol pentanitrate may biodegrade in the terrestrial environment.
An estimated BCF of 17, from an estimated log Kow of 2.4 and a regression-derived equation, suggests a low potential for bioaccumulation and biomagnification.


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