Registration Dossier
Registration Dossier
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EC number: 221-221-0 | CAS number: 3033-77-0
Endpoint summary
Administrative data
Description of key information
Additional information
All the available studies on the test substance reported in the EU RAR clearly demonstrated that the EPTAC is not toxic to fish and to algae. Yet aquatic Invertebrates seems to be more sensitive since an 48h-EC50 = 16.4 mg/L is measured in a reliable test on daphnids (Daphnia magna). The lowest chronic NOEC is 0.16 mg/L and this is also above chronic T-criterion (0.01 mg/L). Therefore, EPTAC does not meet T criteria for ecotoxicological endpoints.
Moreover, DIOL (2,3-Dihydroxypropyltrimethylammonium chloride, CAS 34004-36-9), which is a degradation product of EPTAC, did not present toxic potential on fish and daphnids. Although information on toxicity to algae is not available, it may be assumed from the low toxicity of CHPTAC and EPTAC to algae that the toxicity of DIOL to algae is also low. As a result it can be concluded that the toxicity of DIOL to aquatic organisms in general seems to be low.
Thus, it can be concluded that the test substance (i.e. EPTAC) and its degradation product (i.e. DIOL) present low toxicity to aquatic organisms.
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