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Environmental fate & pathways

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No experimental data on bioaccumulation exist. The OECD 305 TG is not designed for substances of inorganic and/or ionic nature and as such testing may also not be scientifically feasible.


However due to the hydrophilic nature of the substance, bioaccumulation is not expected as accumulation in fats is not possible. The substance when dissolved in water (and so animal tissues/fluids) will effectively separate into/become simply the two ions "phosphate" and "ammonium". Phosphate is a natural ionic component of blood, cell fluids, and other physiological fluids. Therefore, no further testing is considered to be necessary. In addition, no risk of secondary poisoning is anticipated for the same reasons. Ammonium is a naturally-occurring compound and a key intermediate in the nitrogen cycle. Since it is continually recycled in the environment bioaccumulation does not occur. The potential for bioaccumulation is therefore considered to be minimal.