Registration Dossier
Registration Dossier
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EC number: 222-182-2 | CAS number: 3380-34-5
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
most sensitive species: Lactuca sativa: 14-d NOEC = 74 mg/kg soil dw (OECD 208; Ciba Inc., 2010)
Key value for chemical safety assessment
- Long-term EC10, LC10 or NOEC for terrestrial plants:
- 74 mg/kg soil dw
Additional information
The toxicity of Triclosan to seedlings of ten plant species was investigated in a study following OECD guideline 208. The seedlings were planted in soil mixed with a quatz sand/substance mixture.Seedling growth, biomass, morphology and mortality were recorded. The most sensitive NOEC was determined in lettuce. Based on plant dry weight the NOEC was 74 mg/kg (Ciba Inc., 2010).
The influence of Triclosan on seedling emergence of Cucumis sativus and the phytotoxicity of the substance to the seedlings were tested according to guideline FDA TAD-4.07. Plant seeds were grown in natural soil (sandy-loam) and the number of seeds as well shoot length and dry weight were recorded. The test was run for 28 days. Based on seedling emergence a NOEC > 1 mg/kg soil was determined (Ciba-Geigy Corporation 1997). The study by Ciba Inc., (2010) was selected as key study due to testing of more species and resulting in well-defined effect values.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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