Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Ammonium hydrogencarbonate does not hydrolyze nor is there evidence for photodegradation. As ammonium bicarbonate is an inorganic compound which rapidly dissociates in water, some physico-chemical endpoints (Henry’s law constant, partition coefficient) and biodegradation are not easily applicable. In general, fate and behavior of ammonium bicarbonate are closely related to nitrogen and carbon cycles in air and water. Ammonium bicarbonate rapidly dissociates in the environment to yield ammonium ion (NH4 +), bicarbonate ion (HCO3 -) and un-ionized ammonia (NH3). Based on the high water solubility and the ionic nature, ammonium bicarbonate is not expected to adsorb or bioaccumulate to a significant extent. Due to the salt-character of the substance the calculation of a fugacity model is not appropriate. Based on the physico-chemical properties of ammonium bicarbonate, water is expected to be the main target compartment. Based on the high water solubility a low geoaccumulation potential and high mobility in soil is to be expected. However, due to ion-ion interactions it is to be expected that mobility in soil is significantly reduced.