Registration Dossier
Registration Dossier
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EC number: 240-986-1 | CAS number: 16924-00-8
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The short term toxicity in microorganisms of dipotassium heptafluorotantalate was determined in activated sludge.
According to the key study (Müller & Caspers, 2000) performed to GLP and in accordance with standardised guideline EU Method C.11, the test material was shown to have an LC₅₀ of > 10,000 mg/l.
Key value for chemical safety assessment
Additional information
The key study (Müller & Caspers, 2000) is a GLP compliant study performed in accordance to the standardised guideline EU Method C.1, the equivalent of OECD 209. The study was performed to a good standard in line with sound scientific principles and was assigned a reliability score of 2, using the principles set out in Klimisch (1977). The robust study exposed activated sludgeto a range of concentrations over a 3 hour exposure time observing the inhibition of respiration. Under the conditions of the test 48.6 % inhibition of respiration was seen at a concentration of 10000 mg/l. The study determined the LC₅₀ of the test material to be ≥ 10,000 mg/l, greater than the water soulbility of the test material.
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