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 aquatic environmental conditions it is expected that boric acid will be the most common and dominant species; therefore, a read-across approach is considered appropriate to use, refer to Section 13.
The acute and chronic freshwater studies have been used as part of a Species Sensitivity Distribution (SSD) method for derivation of the freshwater intermittent PNEC and the freshwater and marine PNECs. Due to the natural high levels of boron in marine waters it is not expected that marine species will be more sensitive to boron toxicity than freshwater organisms, consequently both freshwater and marine species have been included in Section 6. The key value used to derive the PNEC STP was reported in a ciliate growth inhibition test, which derived a NOEC of 10 mg B/L in the protozoans, Opercularia bimarginata, following 72 hours exposure to the source substance, boric acid.
Based on the read-across data the test substance does not warrant classification and labelling in accordance with Regulation (EC) No 1272/2008 for aquatic toxicity.
Additional information
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