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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in soil

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Description of key information

Inorganic substance, biodegradation testing is not applicable.

Ammonium in soil undergoes nitrification and denitrification as part of the nitrogen cycle and be taken up by plants via nitrogen fixation (WHO,1986). The biological conversion of ammonium to nitrate is called nitrification. Nitrification is a two-step process. Bacteria knowmn as Nitrosomonas convert ammonia and ammonium to nitrite . Next, bacteria called Nitrobacter  finish the conversion of nitrite to nitrate. The reactions are generally coupled and proceed rapidly to the nitrate form.

Key value for chemical safety assessment

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