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EC number: 939-415-5 | CAS number: -
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to terrestrial plants: short-term
- Data waiving:
- other justification
- Justification for data waiving:
- other:
- Endpoint:
- toxicity to terrestrial plants: short-term
- Type of information:
- experimental study
- Adequacy of study:
- disregarded due to major methodological deficiencies
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Only short abstract available
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 208 (Terrestrial Plants Test: Seedling Emergence and Seedling Growth Test)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: EEC Directive 79/831 "Higher Plant Growth Test"
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
The justification for read-across is presented in Section 13 Assessment reports- Read-across justification. - Analytical monitoring:
- no
- Vehicle:
- no
- Species:
- Avena sativa
- Plant group:
- Monocotyledonae (monocots)
- Details on test organisms:
- - Common name: oat
- Species:
- Lycopersicon esculentum
- Plant group:
- Dicotyledonae (dicots)
- Details on test organisms:
- - Common name: tomato
- Species:
- Raphanus sativus
- Plant group:
- Dicotyledonae (dicots)
- Details on test organisms:
- - Common name: radish
- Test type:
- early seedling growth toxicity test
- Study type:
- other: not reported
- Substrate type:
- not specified
- Limit test:
- no
- Total exposure duration:
- 2 wk
- Remarks:
- The test was finished at least two weeks after five of the control seedlings have emerged.
- Species:
- Avena sativa
- Duration:
- 2 wk
- Dose descriptor:
- NOEC
- Effect conc.:
- 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth
- Species:
- Lycopersicon esculentum
- Duration:
- 2 wk
- Dose descriptor:
- NOEC
- Effect conc.:
- 300 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth
- Species:
- Lycopersicon esculentum
- Duration:
- 2 wk
- Dose descriptor:
- LOEC
- Effect conc.:
- 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth
- Species:
- Raphanus sativus
- Duration:
- 2 wk
- Dose descriptor:
- NOEC
- Effect conc.:
- 300 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth
- Species:
- Raphanus sativus
- Duration:
- 2 wk
- Dose descriptor:
- LOEC
- Effect conc.:
- 1 000 mg/kg soil dw
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- growth
Referenceopen allclose all
The test was finished 2 weeks after five of the control seedlings have emerged in the control. Lycopersicon esculentum and Raphanus sativus were more sensitive with a NOEC of 300 mg/kg soil dw compared to Avena sativa with a NOEC of 1000 mg/kg soil dw.
Description of key information
No effects of the test substance on terrestrial plants are expected.
Key value for chemical safety assessment
Additional information
No studies on terrestrial toxicity are available for this substance.
Due to the high Koc a considerable adsorption to sediment and soil is indicated. However, the read-across substance EC 613 -848 -7 has been shown to be readily biodegradable. Therefore, no chronic exposure of terrestrial organisms is expected. In addition, Fatty acid esters are metabolised into fatty acids and alcohols. These components occur in sediment and soils naturally, are part of physiological pathways and can be used as energy source. The enzyme carboxylesterase is omnipresent in the environment, readily degrading this test substance. Thus, toxic effects caused by the metabolites of fatty acid esters are implausible.
Furthermore, an abstract of a terrestrial plant toxicity test (short-term, OECD 208, Kirch 1996) performed on the read-across substance Fatty acids, C14-18 and C16-18 unsatd., triesters with trimethylolpropane (CAS 68002-79-9) indicates no toxicity (NOEC = 300-1000 mg/kg soil dw, LOECs = 1000 mg/kg soil dw). In conclusion, due to a) the observed absence of toxicological effects on aquatic plants (assumption that soil toxicity expressed in terms of the freely-dissolved substance concentration in the pore water is the same as aquatic toxicity, ECHA Guidance on Information Requirements Chapter R.10), b) the lack of chronic exposure and c) the, acknowledged metabolisation of fatty acid esters, toxic effects to terrestrial plants can be excluded.
The justification for read-across is presented in Section 13 Assessment reports- Read-across justification.
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