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Registration Dossier
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EC number: 500-110-3 | CAS number: 50586-59-9 1 - 6.5 moles ethoxylated
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
In 72 h the effective concentration of Propylidynetrimethanol, ethoxylated, which reduces the growth rate of Scenedesmus subspicatus by 50 % (EC50) is > 1.000 mg/L in a test according OECD 201 (Toxicon AB, 1992).
Key value for chemical safety assessment
Additional information
In 72 h the effective concentration of Propylidynetrimethanol, ethoxylated, which reduces the growth rate of Scenedesmus subspicatus CHODAT by 50 % (EC50) is > 100 mg/L in a test according to Directive 92/69/EEC, C.3 which is in most parts equivalent to OECD TG 201 (Bayer Industry Services, 2007). However, there is another study of Perstorp (1992) according to OECD 201 and this study gives a 72 hours-EC50 > 1.000 mg/L. Thus, toxicity to aquatic algae and cyanobacteria is given as 72 hours-EC50 > 1.000 mg/L.
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