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Toxicity to aquatic algae and cyanobacteria

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Description of key information

ErC50 (72 h) > 150 mg/L for Pseudokirchneriella subcapitata (OECD 201)
EyC50 (72 h) = 107.8 mg/L for Pseudokirchneriella subcapitata (OECD 201)
NOErC (72 h) = 44.5 mg/L for Pseudokirchneriella subcapitata (OECD 201)

Key value for chemical safety assessment

Additional information

One study investigating the toxicity of D-Glucopyranose, oligomeric, heptyl glycoside to freshwater green algae is available (Institut technologique FCBA, 2014). In this key study performed according to OECD 201 and GLP, Pseudokirchneriella subcapitata was exposed to nominal concentrations of 30, 44.5, 66.7, 100 and 150 mg/L in a static test design. Analytical verificaton (GC-FID) of the test substance concentrations 30, 100, and 150 mg/L at t=0 and t=72 hours resulted in 102.8 to 110.2% of nominal at t=0 and 103.2 to 113.9% of nominal at t=72 hours, respectively, hence concentrations measured have been satisfactorily maintained within +/-20% of nominal concentrations. The reported ErC50 (72 h) and EyC50 (72 h) values are > 150 mg/L and 107.8 mg/L based on nominal concentrations, respectively. NOErC and LOEC values are 44.5 and 66.7 mg/L, respectively.