Registration Dossier
Registration Dossier
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EC number: 247-728-7 | CAS number: 26479-35-6
Endpoint summary
Administrative data
Description of key information
Additional information
Short-term aquatic ecotoxicological data are available for all three primary trophic levels. In a study performed according to Organisation for Economic Co-operation and Development (OECD) Testing Guideline 203 (Fish, Acute Toxicity Test), fathead minnow (Pimephales promelas) were exposed to five concentrations (separated by a factor of approximately two) of potassium allophonate for 96 hours using a static-renewal test system (ABC Laboratories, 2012b). No mortality was observed during the course of the study in any of the exposure groups; therefore, the 96-hour LC50 is >93.5 mg/L, based on mean measured concentrations.
In a short-term study performed according to OECD Testing Guideline 202 (Daphnia sp. Acute Immobilisation Test), water fleas (Daphnia magna) were exposed to five concentrations of a potassium allophonate solution (separated by a factor of approximately two) under a static-renewal test system (ABC Laboratories, 2012c). The 48-hour EC50 (based on immobility) is >88.4 mg/L, based on mean measured concentrations.
Green algae (Pseudokirchneriella subcapitata) were tested in a study performed according to OECD Testing Guideline 201 (Alga, Growth Inhibition Test) (ABC Laboratories, 2012d). In this test, algae were exposed to five concentrations of a potassium allophonate solution (separated by a spacing factor of approximately two) for 72 hours under a static testing system. During the 72-hour test, rapid hydrolysis of potassium allophonate led to all measured concentrations less than the minimum quantifiable limit (MQL), 0.489 mg/L, at 72 hours. No statistically significant differences in algal growth rate or biomass were observed at any tested concentration; therefore, the 72-hour ErC50 and EyC50 were both >27.4 mg/L, based on mean measured concentrations.
References:
ABC Laboratories, Inc. 2012b. Potassium allophonate: Acute Toxicity to the Fathead Minnow, Pimephales promelas, Determined Under Static Renewal Test Conditions. Testing laboratory: ABC Laboratories, 7200 E. ABC Lane, Columbia, Missouri, 65202. Owner Company: Kerr Fire Fighting Chemicals, Ashcroft Rd., Knowsley Industrial Park, Kirby, Liverpool L33 7TS, England. Company study no.: 68127. Report date: 2012-10-17.
ABC Laboratories, Inc. 2012c. Potassium Allophonate: Acute Toxicity to the Cladoceran, Daphnia magna, Determined Under Static-Renewal Test Condition. Testing laboratory: ABC Laboratories, 7200 E. ABC Lane, Columbia, Missouri, 65202. Owner Company: Kerr Fire Fighting Chemicals, Ashcroft Rd., Knowsley Industrial Park, Kirby, Liverpool L33 7TS, England. Company study no.: 68126. Report date: 2012-11-13.
ABC Laboratories, Inc. 2012d. Potassium Allophonate: Growth Inhibition Test with the Unicellular Green Alga, Pseudokirchneriella subcapitata. Testing laboratory: ABC Laboratories, 7200 E. ABC Lane, Columbia, Missouri, 65202. Owner Company: Kerr Fire Fighting Chemicals, Ashcroft Rd., Knowsley Industrial Park, Kirby, Liverpool L33 7TS, England. Company study no.: 68125. Report date: 2012-10-16.
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