Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Classification related key information
Biodegradation:
Biodegradation in water: 11.2% (DOC removal) in 28 days (OECD 301 E)
Bioaccumulation:
Log Kow < -2 (KOWWIN v1.67)
Acute toxicity
- to aquatic invertebrates: EC50 (48 h) = 66 mg/L for Daphnia magna (OECD 202)
- to algae: ErC50 (72 h) > 100 mg/L, for Pseudokirchnerella subcapitata (OECD 201)
Chronic toxicity
- to aquatic invertebrates: not available
- to algae: NOEC (72 h) = 50 mg/L for Pseudokirchnerella subcapitata (OECD 201)
Classification justification according to CLP
Based on the data above, reaction mass of potassium sodium (2R,3R)-2-hydroxy-3-(phosphonatooxy) butanedioate and potassium sodium (2S,3S)-2-hydroxy-3-(phosphonatooxy) butanedioate is not readily biodegradable. Based on QSAR calculations, no bioaccumulation into organisms is expected by the reaction mass. Concerning the acute aquatic toxicity, the most sensitive species was Daphnia magna with an EC50 of 66 mg/L. Valid chronic toxicity data are available only for algae. The NOEC for the algae Pseudokirchnerella subcapitata is 50 mg/L. Based on these data, the respective reaction mass is classified as hazardous to the environment in the category Chronic 3 according to Regulation (EC) No 1272/2008 (CLP) and Regulation (EU) No 286/2011 (6th ATP).
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