Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Abiotic degradation

FBC Ashes are a mixture of inorganic oxides. This mixture is heterogeneous in size and composition. The most of constituents are insoluble in water and are naturally occuring in soil.

FBC Ash contains calcium oxide and the part of calcium oxide is in free form. This calcium oxide reacts with water to form calcium hydroxide. Calcium hydroxide dissociates slowly in water into form calcium oxide and water. Calcium is present in organisms, plants and sediments as well as possibly dissolved in water column. Hydroxide ions, or hydrogen and oxygen are also easily found throughout the natural environment.

Because none of breakdown products (from calcium oxide) and none constituents are unnatural, there addition to the environment should cause little to no environmental change.

Biotic degradation

FBC Ashes do not undergo biodegradation i.e. microbial degradation to carbon dioxide and water, since it doesn’t contain any carbon or hydrogen atoms. FBC Ashes have low potential for bioaccumulation.