Registration Dossier
Registration Dossier
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EC number: 607-485-3 | CAS number: 25015-63-8
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
As the parent compound rapidly hydrolyses in aqueous systems the assessment of the biodegradability is based on the organic hydrolysis product Pinacol. Pinacol is considered to be "not readily biodegradable according to OECD criteria" and "poorly biodegradable".
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The test substance is known to rapidly hydrolyse in aqueous systems to Pinacol (CAS 76 -09 -5), boric acid (10043 -35 -3) and elemental hydrogen (H2). Elemental hydrogen will participate to air from aqueous systems and boric acid is an inorganic product which cannot be eliminated from water by biological purification processes. Therefore, the assessment of the biodegradability is based on the organic hydrolysis product Pinacol (CAS 76 -09 -5).
Due to its structural properties, Pinacol is not expected to be biologically degradable. This assumption is supported by a QSAR calculation using Catalogic v5.11.5TB.BOD Kinetic (OECD 301F)_v.08.09. This model predicted a biodegradation degree of 0% after a test duration of 28 days. Based on these estimations, the test substance is considered to be "not readily biodegradable according to OECD criteria” and "poorly biodegradable".
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