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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

LC50 = NOEC > 200 mg/l

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
200 mg/L

Additional information

The study was conducted on the similar substance Reaction mass of dipotassium phosphonate and Phosphonic acid, potassium salt (1:1). Rationale for Read Across is attached at point 13

A full test under static conditions was performed to evaluate the effect of test item Potassium phosphonate (KH2PO3/K2HPO3) on zebra fish (Danio Rerio) (Tediosi E., 2013)

The fish were checked for mortality and abnormalities in appearance and behaviour after 2, 24, 48, 72 and 96 hours.

In the negative control no mortality was observed during the test period. This value complies with the validity criterion reported in the guidelines (maximum mortality of one fish, if seven fish are used, in the negative control medium at the end of the test).

No Effect until 200 mg/l (NOEC) was observed