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EC number: 700-957-0
CAS number: 1141852-17-6
NOELR (96 h): 1.3 mg/L / EL50 (96 h) > 139 mg/L based on growth rate (OECD 201)
One study investigated the toxicity of the test substance Y-15866 to
aquatic algae (Weber, 2011). The study was performed according to OECD
201 with green algae, Pseudokirchneriella subcapitata, exposed to a
water accommodated fraction with loading rates of nominal 0.43, 1.3,
4.3, 14, 43 and 139 mg/L for 96 h. The WAFs from 4.3 - 139 mg/L were
prepared individually whereas the two lowest loading rates of 0.43 and
1.3 mg/L were prepared by dilution of the 4.3 mg/L WAF. This was due to
technical reasons and in accordance with OECD 23. Substance specific
analysis of the test item in the test medium was not possible (see
IUCLID section 6.6 for further information). Instead, the total organic
carbon (TOC) was measured as the sum parameter of the components of the
test item to demonstrate the presence of the test item in the test
medium. The substance is hydrolytically unstable. Therefore, this study
also reflects the possible effects of the hydrolysis products. The test
revealed an EL50 based on growth rate of > 139 mg/L. The NOELR was
derived to be 1.3 mg/L.
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