Registration Dossier
Registration Dossier
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EC number: 939-526-9 | CAS number: 90506-73-3
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The 3 h-EC50 of 1-Octadecanol, phosphate, potassium salt (40% aqueous solution) was >400 mg a.i./L in an activated sludge respiration inhibition test. Additionally, no inhibition of biodegradation at a test substance concentration of 100 mg/L in a test on ready biodegradation according to OECD guideline 301B.
Key value for chemical safety assessment
Additional information
In an activated sludge respiration inhibition test according to OECD guideline 209 (4 April 1984) non-adapted activated sludge of predominantly domestic sewage was exposed to 1-Octadecanol, phosphate, potassium salt (40% aqueous solution) at concentrations of 0, 100, 180, 320, 580, 1000 mg/L corresponding to 0, 40, 72, 128, 232 and 400 mg a.i./L for 3 h. Copper(II)sulfate pentahydrate was used as reference substance.
No inhibitory effect was observed at all tested concentration. The 3 h-EC50 was >400 mg a.i./L.
Additionally, in a test on ready biodegradability according to OECD guideline 301B, also the toxicity of the test substance on the degradation of the reference item Sodium benzoate was measured. At a concentration of 100 mg/L of the test substance, the biodegradation of the reference item was not inhibited.
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