Registration Dossier
Registration Dossier
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EC number: 607-485-3 | CAS number: 25015-63-8
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acutely not harmful to fish.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 260 mg/L
Additional information
The test substance is known to rapidly hydrolyse in aquatic systems forming Pinacol (CAS 76-09-5), boric acid (10043-35-3) and elemental hydrogen (H2). The toxicity of the hydrolysis product boric acid was investigated in a study published in 1977 (Birge & Black 1977). In this study, the LC50 on the development of fish larvae (Carassius auratus) after a test duration of 7 days was found to be 260 mg/L (referring to elemental boron). Furthermore, a QSAR calculation using ECOSAR v1.11 for the hydrolysis product Pinacol revealed an estimated LC50 (96h) value of ca. 1977 mg/L on fish (BASF SE, 2013). The result of this calculation is considered to be valid due to the simple molecular structure of the hydrolysis product Pinacol. Based on these values, the test substance and its products of hydolysis are not considered to be acutely harmful to fish.
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