Registration Dossier
Registration Dossier
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EC number: 237-224-5 | CAS number: 13701-64-9
Endpoint summary
Administrative data
Description of key information
In the environment the transformation/hydrolysis of boron compounds is complex and is dependent on environmental factors; however, under typical environmental conditions it is expected that boric acid will be the most common and dominant species in soil and sediment and it is also not expected to degrade further due to the high energy required to break the B – O bond (523 kJ/mol). Therefore, a read-across approach is considered appropriate to use the source substance, boric acid, rather than the target compound (calcium metaborate), refer to Section 13.
Boric acid is highly water soluble and based on adsorption-desorption studies in soil, freshwater and marine sediments, boric acid will predominantly be mobile and remain in the aqueous phase under typical environmental conditions and adsorption to soil and sediment is expected to be low, although in more alkaline conditions some partitioning to soil and/or sediment may occur.
Additional information
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