Registration Dossier
Registration Dossier
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EC number: 270-279-3 | CAS number: 68424-19-1 This substance is identified by SDA Substance Name: C16-C18 and C18 unsaturated alkyl carboxylic acid triethanol amine salt and SDA Reporting Number: 11-006-14.
Endpoint summary
Administrative data
Description of key information
Additional information
The environmental hazard assessment for water organisms and sediment habitats is supported by several acute studies (pelagic compartment and sediment dwelling organisms).
For the environmental hazard assessment of the registered substance acute toxicity studies for marine fish (Turbot, Scophthalmus maximus), marine crustaceans Acartia tonsa, marine algae (Skeletonema costatum) and the sediment dwelling marine amphipod Corophium volutator are available. Long-term studies for fish and daphnids are waived. Experimental information about toxicity on freshwater organisms is not available. The available studies are Klimisch 1 and Klimisch 2 studies and are considered relevant for the risk assessment.
In all of the tests the test material was described as having a low water solubility. Since the test substance is a UVCB substance of low water solubility the test was performed on water accommodated fractions (WAF) as recommended by OECD.
The short-term LL50 values for fish, invertebrates, algae and sediment dwelling amphipods were 1800, 1000, 1000 mg /L and 14111.34 mg/kg dw, respectively, i.e., the highest concentrations tested.
The registered substance is ready biodegradable, and is not acute toxic to pelagic aquatic organisms and sediment dwelling organisms. Therefore, the registered substance is not expected to cause adverse long-term effects on aquatic organisms. Consequently these tests do not need to be conducted to assess the risk for long-term toxicity.
The invertebrates and algae were the most sensitive trophic level with an acute EC50 of 1000 mg/L, i.e., the highest tested concentration. This value will be used as worst case scenario for the risk assessment of aquatic organisms.
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