Registration Dossier
Registration Dossier
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EC number: 700-954-4 | CAS number: 1338-23-4
Endpoint summary
Administrative data
Description of key information
Additional information
Aquatic Toxicity:
Methyl-ethylketone peroxide was tested for aquatic toxicity in a number of tests including EU-Method C.1, Acute toxicity to fish, EU-Method C.2, Acute toxicity to Daphnia and EU-Method C.3, Acute toxicity to algae.
Fish:
Acute toxicity to fish in the test with Poecilia reticulata (guppy) revealed a 96 h-LC50 of 44.2 mg/L. The NOEC after 96 hours was 18 mg/L, whereas 100 mg/L produced 100% mortality within 24 hours.
Daphnia:
Acute toxicity to aquatic invertebrates in the test with Daphnia magna revealed a 48 h-EC50 of 39 mg/L.
The NOEC after 24 hours was 26.7 mg/L.
Algae:
Acute toxicity to algae in the test with Pseudokirchneriella subcapitate revealed a 72 h-EC50 (growth rate) of 5.6 mg/L and 72 h-EC50 (cell growth) of 3 .2 mg/L. Furthermore, a 72h-EC50 (growth rate) of 2.1 mg/L and a 72 h-EC50 (cell growth) of 1.7 mg/L. The 72 h-NOEC (cell growth and growth rate) was 2.1 mg/L.
Toxicity to microorganisms:
The toxicity of methyl-ethylketone peroxide to microorganisms was tested in activated sludge respiration inhibition test. The EC 50 (30 min) was determined to be 48 mg/L (nominal concentration).
Long-term toxicity testing to fish and aquatic invertebrates was waived based on ready biodegrability and very limited exposure to the environment, if any.
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