Registration Dossier
Registration Dossier
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EC number: 809-852-5 | CAS number: 3395-98-0
Endpoint summary
Administrative data
Description of key information
Additional information
Short-term toxicity on fish
In two 96 hour acute toxicity study, fish were exposed to 5-Methyl-3- vinyloxazolidin-2-on at nominal concentrations of 0 (control), 120 mg/L under static conditions in accordance with the OECD 203 test guideline. The water pH, temperature and dissolved oxygen were within acceptable guideline specifications. The 96 hour LC50 were >120 mg/L based on the nominal concentration resp. > 113 mg/L measred concentrations of the test substance.
Short-term toxicity to aquatic invertebrates
In a 48-hour acute toxicity study, neonate Daphnia magna were exposed to 5-Methyl-3- vinyloxazolidin-2-on at nominal concentrations of 0 (control) and 120 mg/L under static conditions in accordance with the OECD 202 guideline. The water pH, temperature and dissolved oxygen were within acceptable guideline specifications. Immobilization (mortality) and sublethal effects were observed daily. The 48 hour EC50 values determined in this acute toxicity study were >120 mg/L based on the nominal concentration of the test substance.
Toxicity to aquatic algae and cyanobacteria
In a 72-hour algal growth study, cultures of Pseudokirchneriella subcapitata were exposed to 5-Methyl-3-vinyloxazolidin-2-on at nominal concentrations of 0 (control) and 120 mg/L under static conditions in accordance with the OECD 201 guideline. The water pH, temperature and lighting intensity were all maintained within acceptable guideline specifications. The following effect concentrations were obtained after 72 hours of exposure: ErC50>120 mg/L, NOErC >=120mg/L.
Toxicity to microorganisms
Activated Sludge Respiration Inhibition Test (OECD 209) conducted with test substance reveal an EC10=3.5 mg/L, EC20=12mg/L, EC50=110 mg/L after 3h incubation. Thus depending on local consitions and existing concentrations, disturbances in the biodegradation process of activated sludge are possible.
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