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EC number: 204-589-7 | CAS number: 122-99-6
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
The NOEC based on emergence rate, dry weight, fresh weight and shoot height was 250, 63, <63 and <63 mg/kg soil DM, respectively. - The percentage of organic carbon in the natural soil has not been corrected for. As the percent organic carbon was 0.88% and the agreed standard organic matter percent for tests is 3.4% a correction factor of 3.86 should be multiplied by all endpoints. The resulting lowest EC50 (standard) was 131 mg a.s./kg dry mass soil; fresh weight for Brassica napus. for Avena sativa, 250, <63, <63 and <63 mg/kg soil DM, respectively, for Brassica napus, and 63, <63, <63 and <63 mg/kg soil DM, respectively, for Vicia sativa (most sensitive species). The EC50 based on emergence rate, dry weight, fresh weight and shoot height was 466, 235, 166 and 203 mg/kg soil DM, respectively, for Avena sativa, 361, 37, 34 and 40 mg/kg soil DM, respectively, for Brassica napus (most sensitive species), and 64, 107, 83 and >251 mg/kg soil DM, respectively, for Vicia sativa.
Key value for chemical safety assessment
- Short-term EC50 or LC50 for terrestrial plants:
- 131 mg/kg soil dw
Additional information
In the key study, the effects of 2-phenoxyethanol on Brassica napus, Avena sativa and Vicia sativa were investigated according to OECD 208 under GLP (BASF SE, 2008). Soil samples were exposed to phenoxyethanol (purity 99.9%) at nominal concentrations of 0, 62.5, 125, 250, 500 and 1000 mg/kg DM. Five days after exposure, the seeds were sowed and the emerging seedlings were recorded as well as 14 days after emergence of all seedlings, the dry weight, fresh weight and shoot length were determined. The NOEC based on emergence rate, dry weight, fresh weight and shoot height was 250, 63, <63 and <63 mg/kg soil DM, respectively, for Avena sativa, 250, <63, <63 and <63 mg/kg soil DM, respectively, for Brassica napus, and 63, <63, <63 and <63 mg/kg soil DM, respectively, for Vicia sativa (most sensitive species). The EC50 based on emergence rate, dry weight, fresh weight and shoot height was 466, 235, 166 and 203 mg/kg soil DM, respectively, for Avena sativa, 361, 37, 34 and 40 mg/kg soil DM, respectively, for Brassica napus (most sensitive species), and 64, 107, 83 and >251 mg/kg soil DM, respectively, for Vicia sativa. In a supporting study, the inhibiting effect of 2-phenoxyethanol on seedling emergence and growth was investigated for three terrestrial plants according to OECD Guideline 208 (Sasol Germany GmbH, 1994). Seeds were planted in concentrations of 0, 1, 10 and 100 mg/kg soil dw test substance (purity 85.7%, contaminated with phenoxydiethanol). The NOEC was based on seedling emergence while the EC50 value was based on growth inhibition. For Brassica alba, a NOEC(17d) of 100 mg/kg soil dw and an EC50(17d) of 40 mg/kg soil dw were found. For Lepidum sativum, a NOEC(17d) of >100 mg/kg soil dw and an EC50(17d) of 38 mg/kg soil dw were found, and for Triticum aestivum, a NOEC(17d) of >100 mg/kg soil dw and an EC50(17d) of 73 mg/kg soil dw were determined.
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