Registration Dossier
Registration Dossier
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EC number: 201-184-7 | CAS number: 79-19-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
There are various available data for the substance:
1. ACUTE TOXICITY TO FISH
Weight of evidence: Guideline TG 203, GLP principles followed. Based on available data from National instititute of technology and evaluation (NITE) test item has Lethal concentration LC50 (96h) of 21 mg/L, tested on the fish: Oryzias latipes.
The result of the study, published in the Journal of Hydrology, is evaluated as LC50 (96h) of 20.8 mg/L and 95% confidence interval of 15.7-29.3mg/L, tested on the fish species Pimephales promelas. To the tested substance was assigned the degree of toxicity according the E.P.A., category C.
2. AQUATIC INVERTEBRATES
Key study:Based on available data from National instititute of technology and evaluation (NITE) test item has Effective concentration EC50 (48h) of 12 mg/L based on mortality for daphnia magna.
3. TOXICITY TO AQUATIC ALGAE
Key study: Based on available data from National instititute of technology and evaluation (NITE) test item has Effective concentration EC50 (72h) of 19 mg/L and NOEC (72h) of 2.8mg/L based on growth rate.
4. TOXICITY TO MICROORGANISMS
Supporting study: According the handbook of Enviromental data on Organic chemicals, the test item has the IC value for microorganisms Nitrosomonas: IC50 of 0.9 mg/L, IC0 of 0.09 mg/L, IC31 of 0.45mg/L and IC66 of 0.61 mg/L.
Conclusion on classification
Based on the available data, the substance is considered as not readily biodegradable and the partition coefficient was determined to be lower than 4. According the data from National instititute of technology and evaluation (NITE), where LC50 (96h) was determined as 21 mg/L for fish, the EC50 (48h) of 12 mg/L based on mortality for daphnia magna, and Effective concentration EC50 (72h) of 19 mg/L for algae,the substance is classified as Hazardous to the aquatic environment, Chronic category 3, H412.
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