Registration Dossier
Registration Dossier
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EC number: 231-954-8 | CAS number: 7782-41-4
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The toxicity of fluorine to aquatic invertebrates is derived from ecotoxicity data of its degradation product fluoride.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 26 mg/L
Additional information
No aquatic toxicity studies with fluorine are available or can be performed as in contact with water fluorine reacts instantly and violently under formation of hydrogen fluoride. Hydrogen fluoride will further react to fluoride. Therefore available data from studies with fluoride, are given as indication of the aquatic toxicity of fluorine.
Several studies were performed investigating the toxicity of fluoride to aquatic invertebrates. The most sensitive effect value was found in benthic macroinvertebrates. In this study, fifth instar larvae of five caddisfly species were exposed to sodium fluoride in a static test system for 96 hours. The 96-h EC50 values for fluoride ranged from 26 to 48 mg/L (soft water).
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