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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

No toxic effects for freshwater algae are expected up to the limit of water solubility (< 0.01 mg/L). The key value refers to the maximum loading tested.

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

Reference is made to a GLP Guideline study conducted according to OECD 201 investigating the toxicity of the analogue tetradecyl myristate (CAS 3234-85-3) to freshwater algae (Wenzel, 2012). The green algae Pseudokirchneriella subcapitata was exposed for 72 h to a limit Water Accommodated Fraction (WAF) concentration of nominal 100 mg/L.GC/EI-MS analysis resulted in a measured concentration of 0.142 µg/L (arithmetic mean) over the time of exposure. No effects on growth and yield of algae were observed resulting in an EL50 of > 100 mg/L (nominal) and > 1.465 µg/L (arithmetic mean of measured concentration), respectively. The NOELR was derived to be ≥ 100 mg/L (nominal) and ≥ 1.465 µg/L (arithmetic mean of measured concentration). Based on this result it can be concluded that no toxicological effects on aquatic algae are expected up to the limit of water solubility for tetradecyl myristate.